policy: T6751: add missing completion helpers for community-list (backport #4112)

[mergify]

Change Summary

Add all missing, well-known values for the community-list regex.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T6751

Related PR(s)

Component(s) name

FRR / policy / bgp

Smoketest result

[email protected]:~$ /usr/libexec/vyos/tests/smoke/cli/test_policy.py
test_access_list (__main__.TestPolicy.test_access_list) ... ok
test_access_list6 (__main__.TestPolicy.test_access_list6) ... ok
test_as_path_list (__main__.TestPolicy.test_as_path_list) ... ok
test_community_list (__main__.TestPolicy.test_community_list) ... ok
test_delete_ipv4_ipv6_table_id (__main__.TestPolicy.test_delete_ipv4_ipv6_table_id) ... ok
test_destination_ipv6_table_id (__main__.TestPolicy.test_destination_ipv6_table_id) ... ok
test_destination_table_id (__main__.TestPolicy.test_destination_table_id) ... ok
test_extended_community_list (__main__.TestPolicy.test_extended_community_list) ... ok
test_frr_individual_remove_T6283_T6250 (__main__.TestPolicy.test_frr_individual_remove_T6283_T6250) ... ok
test_fwmark_ipv6_table_id (__main__.TestPolicy.test_fwmark_ipv6_table_id) ... ok
test_fwmark_sources_destination_ipv6_table_id (__main__.TestPolicy.test_fwmark_sources_destination_ipv6_table_id) ... ok
test_fwmark_sources_destination_table_id (__main__.TestPolicy.test_fwmark_sources_destination_table_id) ... ok
test_fwmark_sources_ipv6_table_id (__main__.TestPolicy.test_fwmark_sources_ipv6_table_id) ... ok
test_fwmark_sources_table_id (__main__.TestPolicy.test_fwmark_sources_table_id) ... ok
test_fwmark_table_id (__main__.TestPolicy.test_fwmark_table_id) ... ok
test_iif_sources_ipv6_table_id (__main__.TestPolicy.test_iif_sources_ipv6_table_id) ... ok
test_iif_sources_table_id (__main__.TestPolicy.test_iif_sources_table_id) ... ok
test_ipv6_table_id (__main__.TestPolicy.test_ipv6_table_id) ... ok
test_large_community_list (__main__.TestPolicy.test_large_community_list) ... ok
test_multiple_commit_ipv4_table_id (__main__.TestPolicy.test_multiple_commit_ipv4_table_id) ... ok
test_prefix_list (__main__.TestPolicy.test_prefix_list) ... ok
test_prefix_list6 (__main__.TestPolicy.test_prefix_list6) ... ok
test_prefix_list_duplicates (__main__.TestPolicy.test_prefix_list_duplicates) ... ok
test_protocol_destination_table_id (__main__.TestPolicy.test_protocol_destination_table_id) ... ok
test_protocol_port_address_fwmark_table_id (__main__.TestPolicy.test_protocol_port_address_fwmark_table_id) ... ok
test_route_map (__main__.TestPolicy.test_route_map) ... ok
test_route_map_community_set (__main__.TestPolicy.test_route_map_community_set) ... ok
test_table_id (__main__.TestPolicy.test_table_id) ... ok

----------------------------------------------------------------------
Ran 28 tests in 105.949s

OK

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

---

This is an automatic backport of pull request #4112 done by [Mergify](https://mergify.com).

[github-actions]

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