Adapt mqtt and mqtt kafka configs to new changes

src/reference/config/bindings/binding-mqtt-kafka.md

@@ -18,9 +18,14 @@ This is currently in the incubator. Follow the [Zilla repo](https://github.com/a
 :::
 
 ```yaml {2}
-mqtt_server:
+mqtt_kafka_proxy:
   type: mqtt-kafka
   kind: proxy
+  options:
+    topics:
+      sessions: mqtt-sessions
+      messages: mqtt-messages
+      retained: mqtt-retained
   exit: kafka_cache_client
 ```
 
@@ -33,6 +38,7 @@ Defines a binding with `mqtt-kafka`  support, with `proxy` behavior.
 :::: note Properties
 
 - [kind\*](#kind)
+- [options](#options)
 - [exit](#exit)
 
 ::: right
@@ -47,6 +53,38 @@ Defines a binding with `mqtt-kafka`  support, with `proxy` behavior.
 
 Behave as a `mqtt-kafka` `proxy`.
 
+### options
+
+> `object`
+
+`mqtt-kafka`-specific options for configuring the `kafka` topics that the proxy will use to route mqtt messages and session states
+
+```yaml
+options:
+  topics:
+    sessions: mqtt-sessions
+    messages: mqtt-messages
+    retained: mqtt-retained
+```
+
+#### options.topics.sessions
+
+> `object`
+
+Compacted Kafka topic for storing mqtt session states.
+
+#### options.topics.messages
+
+> `object`
+
+Kafka topic used for routing mqtt messages.
+
+#### options.topics.retained
+
+> `object`
+
+Compacted Kafka topic for storing mqtt retained messages.
+
 ### exit
 
 > `string`

src/reference/config/bindings/binding-mqtt.md

@@ -23,8 +23,15 @@ mqtt_server:
   kind: server
   routes:
     - when:
-        - topic: messages
-          capabilities: publish_and_subscribe
+        - topic: sensor/one
+          capabilities: publish
+      exit: mqtt_kafka_proxy
+    - when:
+        - topic: sensor/two
+          capabilities: subscribe
+      exit: mqtt_kafka_proxy
+    - when:
+         - capabilities: session
       exit: mqtt_kafka_proxy
 ```
 
@@ -100,7 +107,7 @@ List of conditions (any match) to match this route.
 routes:
   - when:
       - topic: echo
-        capabilities: publish_and_subscribe
+        capabilities: publish
 ```
 
 #### when[].topic\*
@@ -111,10 +118,10 @@ Topic name.
 
 #### when[].capabilities
 
-> `enum` [ "session", "publish_only", "subscribe_only", "publish_and_subscribe" ]
+> `enum` [ "session", "publish_only", "subscribe_only" ]
 
-Session, publish, subscribe, or both publish and subscribe.\
-Defaults to `"publish_and_subscribe"`.
+Session, publish, subscribe.\
+Publish and subscribe if not specified.
 
 ### routes[].exit\*