Allow for jinja2 templating of docker_config

In support of the wider Multi-RHEL effort. We will
need to support templating to allow for Ansible to
determine which container needs to be pulled to
the hosts based on their OS version.

This change adds support for that templating of
the docker_config files.

Change-Id: Id56a4670507524f41fde238887fce4dd19e90a87

common/common-container-setup-tasks.yaml

@@ -72,7 +72,7 @@
   become: true
   container_startup_config:
     config_base_dir: /var/lib/tripleo-config/container-startup-config
-    config_data: "{{ lookup('file', (tripleo_role_name + '/docker_config.yaml'), errors='ignore') | default({}, True) | from_yaml }}"
+    config_data: "{{ lookup('template', (tripleo_role_name + '/docker_config.yaml'), errors='ignore') | default({}, True) | from_yaml }}"
   tags:
     - container_startup_configs
 

deployment/podman/podman-baremetal-ansible.yaml

@@ -169,7 +169,7 @@ outputs:
               delay: 5
               loop_control:
                   loop_var: prefetch_image
-              loop: "{{ lookup('file', tripleo_role_name + '/docker_config.yaml', errors='ignore') | default('{}', True) | from_yaml | recursive_get_key_from_dict(key='image') | unique }}"
+              loop: "{{ lookup('template', tripleo_role_name + '/docker_config.yaml', errors='ignore') | default('{}', True) | from_yaml | recursive_get_key_from_dict(key='image') | unique }}"
 
         - name: Manage tripleo container services
           include_role: