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-conduit/defaults/main.yml

@@ -7,8 +7,10 @@ matrix_conduit_enabled: true
 
 matrix_conduit_hostname: ''
 
-matrix_conduit_docker_image: "{{ matrix_conduit_docker_image_name_prefix }}matrixconduit/matrix-conduit:{{ matrix_conduit_docker_image_tag }}"
-matrix_conduit_docker_image_name_prefix: "docker.io/"
+matrix_conduit_docker_image: "{{ matrix_conduit_docker_image_registry_prefix }}matrixconduit/matrix-conduit:{{ matrix_conduit_docker_image_tag }}"
+matrix_conduit_docker_image_registry_prefix: "{{ matrix_conduit_docker_image_registry_prefix_upstream }}"
+matrix_conduit_docker_image_registry_prefix_upstream: "{{ matrix_conduit_docker_image_registry_prefix_upstream_default }}"
+matrix_conduit_docker_image_registry_prefix_upstream_default: docker.io/
 # renovate: datasource=docker depName=matrixconduit/matrix-conduit
 matrix_conduit_docker_image_tag: "v0.9.0"
 matrix_conduit_docker_image_force_pull: "{{ matrix_conduit_docker_image.endswith(':latest') }}"

roles/custom/matrix-conduit/tasks/validate_config.yml

@@ -9,3 +9,11 @@
     - {'name': 'matrix_conduit_hostname', when: true}
     - {'name': 'matrix_conduit_container_network', when: true}
     - {'name': 'matrix_conduit_container_labels_internal_client_api_traefik_entrypoints', when: "{{ matrix_conduit_container_labels_internal_client_api_enabled }}"}
+
+- name: (Deprecation) Catch and report renamed Conduit variables
+  ansible.builtin.fail:
+    msg: >-
+      The variable `{{ item.old }}` is deprecated. Please use `{{ item.new }}` instead.
+  when: "item.old in vars"
+  with_items:
+    - {'old': 'matrix_conduit_container_image_name_prefix', 'new': 'matrix_conduit_docker_image_registry_prefix'}