Rework all roles to include component_(docker|container)_image_registry_prefix* variables

This:

- brings consistency - no more mixing `_name_prefix` and `_registry_prefix`
- adds extensibility - a future patch will allow reconfiguring all registry prefixes for all roles in the playbook

We still have `_docker_` vs `_container_` inconsistencies.
These may be worked on later.

roles/custom/matrix-bridge-beeper-linkedin/defaults/main.yml

@@ -8,9 +8,11 @@ matrix_beeper_linkedin_enabled: true
 matrix_beeper_linkedin_version: latest
 
 # See: https://github.com/beeper/linkedin/pkgs/container/linkedin
-matrix_beeper_linkedin_docker_image: "{{ matrix_beeper_linkedin_docker_image_name_prefix }}beeper/linkedin:{{ matrix_beeper_linkedin_docker_image_tag }}"
+matrix_beeper_linkedin_docker_image: "{{ matrix_beeper_linkedin_docker_image_registry_prefix }}beeper/linkedin:{{ matrix_beeper_linkedin_docker_image_tag }}"
 matrix_beeper_linkedin_docker_image_force_pull: "{{ matrix_beeper_linkedin_docker_image_tag.startswith('latest') }}"
-matrix_beeper_linkedin_docker_image_name_prefix: "{{ 'localhost/' if matrix_beeper_linkedin_container_image_self_build else 'ghcr.io/' }}"
+matrix_beeper_linkedin_docker_image_registry_prefix: "{{ 'localhost/' if matrix_beeper_linkedin_container_image_self_build else matrix_beeper_linkedin_docker_image_registry_prefix_upstream }}"
+matrix_beeper_linkedin_docker_image_registry_prefix_upstream: "{{ matrix_beeper_linkedin_docker_image_registry_prefix_upstream_default }}"
+matrix_beeper_linkedin_docker_image_registry_prefix_upstream_default: "ghcr.io/"
 matrix_beeper_linkedin_docker_image_tag: "{{ 'latest' if matrix_beeper_linkedin_version == 'master' else matrix_beeper_linkedin_version }}"
 
 matrix_beeper_linkedin_container_image_self_build: false

roles/custom/matrix-bridge-beeper-linkedin/tasks/validate_config.yml

@@ -20,3 +20,4 @@
   when: "item.old in vars"
   with_items:
     - {'old': 'matrix_beeper_linkedin_login_shared_secret', 'new': '<superseded by matrix_beeper_linkedin_bridge_login_shared_secret_map_*>'}
+    - {'old': 'matrix_beeper_linkedin_docker_image_name_prefix', 'new': 'matrix_beeper_linkedin_docker_image_registry_prefix'}