Remove the designate-agent service/package install

As of caracal [1] the designate-agent service has been removed. The
designate-mdns service is used instead, which was enabled in a previous
release. The default settings for the designate-mdns have been left as
is.

[1] https://docs.openstack.org/releasenotes/designate/2024.1.html

func-test-pr: openstack-charmers/zaza-openstack-tests#1214

Change-Id: I1f3f15dff365df467379957fd5b96d6623496c86
Closes-Bug: #2065596
(cherry picked from commit c32bd72)

src/lib/charm/openstack/designate.py

@@ -787,3 +787,20 @@ class DesignateCharmVictoria(DesignateCharmRocky):
                 'designate-producer', 'bind9utils',
                 'python3-designate',
                 'python3-apt']
+
+
+class DesignateCharmCaracal(DesignateCharmRocky):
+
+    release = 'caracal'
+
+    packages = ['designate-api', 'designate-central',
+                'designate-common', 'designate-mdns',
+                'designate-worker', 'designate-sink',
+                'designate-producer', 'bind9utils',
+                'python3-designate',
+                'python3-apt']
+
+    services = ['designate-mdns', 'designate-producer',
+                'designate-worker',
+                'designate-central', 'designate-sink',
+                'designate-api']

src/templates/caracal/designate.conf

@@ -0,0 +1,341 @@
+# Caracal
+[DEFAULT]
+# Where an option is commented out, but filled in this shows the default
+# value of that optiona aaa
+
+########################
+## General Configuration
+########################
+# Show more verbose log output (sets INFO log level output)
+verbose = {{ options.verbose }}
+
+# Show debugging output in logs (sets DEBUG log level output)
+debug = {{ options.debug }}
+
+# Top-level directory for maintaining designate's state
+#state_path = /var/lib/designate
+
+# Log Configuration
+#log_config = None
+
+# Log directory
+#logdir = /var/log/designate
+
+# Use "sudo designate-rootwrap /etc/designate/rootwrap.conf" to use the real
+# root filter facility.
+# Change to "sudo" to skip the filtering and just run the comand directly
+#root_helper = sudo designate-rootwrap /etc/designate/rootwrap.conf
+
+# Which networking API to use, Defaults to neutron
+#network_api = neutron
+
+{%- if options.default_ttl %}
+# TTL Value (integer value)
+default_ttl = {{ options.default_ttl }}
+{%- endif %}
+{%- if options.default_soa_refresh_min %}
+# SOA refresh-min value (integer value)
+default_soa_refresh_min = {{ options.default_soa_refresh_min }}
+{%- endif %}
+{%- if options.default_soa_refresh_max %}
+# SOA max value (integer value)
+default_soa_refresh_max = {{ options.default_soa_refresh_max }}
+{%- endif %}
+{%- if options.default_soa_retry %}
+# SOA retry (integer value)
+default_soa_retry = {{ options.default_soa_retry }}
+{%- endif %}
+{%- if options.default_soa_minimum %}
+# SOA minimum value (integer value)
+default_soa_minimum = {{ options.default_soa_minimum }}
+{%- endif %}
+# SOA expire (integer value)
+default_soa_expire = {{ options.default_soa_expire }}
+
+{% include "parts/section-transport-url" %}
+
+#-----------------------
+# RabbitMQ Config
+#-----------------------
+{% include "parts/section-oslo-messaging-rabbit" %}
+
+########################
+## Service Configuration
+########################
+#-----------------------
+# Central Service
+#-----------------------
+[service:central]
+# Number of central worker processes to spawn
+workers = {{ options.workers }}
+
+# Number of central greenthreads to spawn
+#threads = 1000
+
+# Maximum domain name length
+#max_domain_name_len = 255
+
+# Maximum recordset name length
+#max_recordset_name_len = 255
+
+# Minimum TTL
+#min_ttl = None
+
+# The name of the default pool
+#default_pool_id = '794ccc2c-d751-44fe-b57f-8894c9f5c842'
+
+## Managed resources settings
+
+# Email to use for managed resources like domains created by the FloatingIP API
+managed_resource_email = {{ options.managed_resource_email }}
+
+{%- if options.managed_resource_tenant_id %}
+# Tenant ID to own all managed resources - like auto-created records etc.
+managed_resource_tenant_id = {{ options.managed_resource_tenant_id }}
+{%- endif %}
+
+#-----------------------
+# API Service
+#-----------------------
+[service:api]
+# Number of api worker processes to spawn
+#workers = None
+
+# Number of api greenthreads to spawn
+#threads = 1000
+
+# Enable host request headers
+enable_host_header = true
+
+# The base uri used in responses
+api_base_uri = '{{ options.external_endpoints.designate_api.url }}'
+
+# API host:port pairs to listen on (list value)
+# NOTE:tinwood - Listen on every interface; fix for BUG #1734156
+listen = 0.0.0.0:{{ options.service_listen_info.designate_api.port }}
+
+# Maximum line size of message headers to be accepted. max_header_line may
+# need to be increased when using large tokens (typically those generated by
+# the Keystone v3 API with big service catalogs).
+#max_header_line = 16384
+
+# Authentication strategy to use - can be either "noauth" or "keystone"
+#auth_strategy = keystone
+
+# Enable Version 1 API (deprecated)
+enable_api_v1 = True
+
+# Enabled API Version 1 extensions
+# Can be one or more of : diagnostics, quotas, reports, sync, touch
+#enabled_extensions_v1 =
+enabled_extensions_v1 = sync, touch
+
+# Enable Version 2 API
+enable_api_v2 = True
+
+# Enabled API Version 2 extensions
+#enabled_extensions_v2 =
+
+# Default per-page limit for the V2 API, a value of None means show all results
+# by default
+#default_limit_v2 = 20
+
+# Max page size in the V2 API
+#max_limit_v2 = 1000
+
+# Enable Admin API (experimental)
+#enable_api_admin = False
+enable_api_admin = {{ options.enable_admin_api }}
+
+# Enabled Admin API extensions
+# Can be one or more of : reports, quotas, counts, tenants, zones
+# zone export is in zones extension
+#enabled_extensions_admin =
+{% if options.enable_admin_api -%}
+enabled_extensions_admin = reports, quotas, counts, tenants, zones
+{%- endif %}
+
+# Default per-page limit for the Admin API, a value of None means show all results
+# by default
+#default_limit_admin = 20
+
+# Max page size in the Admin API
+#max_limit_admin = 1000
+
+# Show the pecan HTML based debug interface (v2 only)
+# This is only useful for development, and WILL break python-designateclient
+# if an error occurs
+#pecan_debug = False
+
+#-----------------------
+# Keystone Middleware
+#-----------------------
+{% include "parts/section-keystone-authtoken" %}
+
+#-----------------------
+# Sink Service
+#-----------------------
+[service:sink]
+# List of notification handlers to enable, configuration of these needs to
+# correspond to a [handler:my_driver] section below or else in the config
+# Can be one or more of : nova_fixed, neutron_floatingip
+enabled_notification_handlers = {{ options.notification_handlers }}
+
+#-----------------------
+# mDNS Service
+#-----------------------
+[service:mdns]
+# Number of mdns worker processes to spawn
+#workers = None
+
+# Number of mdns greenthreads to spawn
+#threads = 1000
+
+# mDNS Bind Host
+#host = 0.0.0.0
+
+# mDNS Port Number
+#port = 5354
+
+# mDNS TCP Backlog
+#tcp_backlog = 100
+
+# mDNS TCP Receive Timeout
+#tcp_recv_timeout = 0.5
+
+# Enforce all incoming queries (including AXFR) are TSIG signed
+#query_enforce_tsig = False
+
+# Send all traffic over TCP
+#all_tcp = False
+
+# Maximum message size to emit
+#max_message_size = 65535
+
+#-----------------------
+# Worker Service
+#-----------------------
+[service:worker]
+enabled = True
+
+###################################
+## Pool Manager Cache Configuration
+###################################
+#-----------------------
+# SQLAlchemy Pool Manager Cache
+#-----------------------
+[pool_manager_cache:sqlalchemy]
+connection = {{ shared_db.designate_pool_uri }}
+#connection = sqlite:///$state_path/designate_pool_manager.sqlite
+#connection_debug = 100
+#connection_trace = False
+#sqlite_synchronous = True
+#idle_timeout = 3600
+#max_retries = 10
+#retry_interval = 10
+
+#-----------------------
+# Memcache Pool Manager Cache
+#-----------------------
+[pool_manager_cache:memcache]
+#memcached_servers = None
+#expiration = 3600
+
+
+##############
+## Network API
+##############
+[network_api:neutron]
+# Comma separated list of values, formatted "<name>|<neutron_uri>"
+#endpoints = RegionOne|http://localhost:9696
+#endpoint_type = publicURL
+#timeout = 30
+#admin_username = designate
+#admin_password = designate
+#admin_tenant_name = designate
+#auth_url = http://localhost:35357/v2.0
+#insecure = False
+#auth_strategy = keystone
+#ca_certificates_file =
+
+########################
+## Storage Configuration
+########################
+#-----------------------
+# SQLAlchemy Storage
+#-----------------------
+[storage:sqlalchemy]
+# Database connection string - to configure options for a given implementation
+# like sqlalchemy or other see below
+#connection = sqlite:///$state_path/designate.sqlite
+connection = {{ shared_db.designate_uri }}
+#connection_debug = 0
+#connection_trace = False
+#sqlite_synchronous = True
+#idle_timeout = 3600
+#max_retries = 10
+#retry_interval = 10
+
+########################
+## Handler Configuration
+########################
+#-----------------------
+# Nova Fixed Handler
+#-----------------------
+#format = '%(hostname)s.%(domain)s'
+
+#############################
+## Agent Backend Configuration
+#############################
+[backend:agent:bind9]
+#rndc_config_file = /etc/rndc.conf
+#rndc_key_file = /etc/rndc.key
+#zone_file_path = $state_path/zones
+#query_destination = 127.0.0.1
+#
+[backend:agent:denominator]
+#name = dynect
+#config_file = /etc/denominator.conf
+
+########################
+## Library Configuration
+########################
+[oslo_concurrency]
+# Path for Oslo Concurrency to store lock files, defaults to the value
+# of the state_path setting.
+#lock_path = $state_path
+
+########################
+## Coordination
+########################
+[coordination]
+{% if coordinator_memcached.url -%}
+backend_url = {{ coordinator_memcached.url }}
+{%- endif %}
+
+########################
+## Hook Points
+########################
+# Hook Points are enabled when added to the config and there has been
+# a package that provides the corresponding named designate.hook_point
+# entry point.
+
+# [hook_point:name_of_hook_point]
+# some_param_for_hook = 42
+# Hooks can be disabled in the config
+# enabled = False
+
+# Hook can also be applied to the import path when the hook has not
+# been given an explicit name. The name is created from the hook
+# target function / method:
+#
+#   name = '%s.%s' % (func.__module__, func.__name__)
+
+# [hook_point:designate.api.v2.controllers.zones.get_one]
+
+{% include "parts/section-oslo-middleware" %}
+
+[producer_task:zone_purge]
+
+# How old deleted records should be (deleted_at) to be purged, in seconds
+time_threshold = {{ options.zone_purge_time_threshold }}