Add missing package docker-rhel-push-plugin

docker-rhel-push-plugin is necessary for variable
openshift_docker_disable_push_dockerhub=True to work.

Without this rpm, docker will fail to start with
unknown option.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1564076

roles/container_runtime/tasks/package_docker.yml

@@ -25,10 +25,13 @@
 # Make sure Docker is installed, but does not update a running version.
 # Docker upgrades are handled by a separate playbook.
 # Note: The curr_docker_version.stdout check can be removed when https://github.com/ansible/ansible/issues/33187 gets fixed.
-- name: Install Docker
+- name: Install Docker Packages
   package:
-    name: "docker{{ '-' + docker_version if docker_version is defined else '' }}"
+    name: "{{ item }}"
     state: present
+  with_items:
+  - "docker{{ '-' + docker_version if docker_version is defined else '' }}"
+  - docker-rhel-push-plugin
   when:
   - not (openshift_is_atomic | bool)
   - not (curr_docker_version is skipped)