rbdmirror: refact tasks directory layout

This commit moves containerized deployment related files to `./tasks/`
directory. This is needed to make `docker-to-podman.yml` working since
we use `tasks_from:` option.

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>

infrastructure-playbooks/docker-to-podman.yml

@@ -100,7 +100,7 @@
 
     - import_role:
         name: ceph-rbd-mirror
-        tasks_from: container/systemd.yml
+        tasks_from: systemd.yml
       when: inventory_hostname in groups.get(rbdmirror_group_name, [])
 
     - import_role:

roles/ceph-rbd-mirror/tasks/container/main.yml

@@ -1,3 +0,0 @@
----
-- name: include start_docker_rbd_mirror.yml
-  include_tasks: start_docker_rbd_mirror.yml

roles/ceph-rbd-mirror/tasks/main.yml

@@ -18,8 +18,8 @@
       set_fact:
         container_exec_cmd: "{{ container_binary }} exec ceph-rbd-mirror-{{ ansible_hostname }}"
 
-    - name: include container/main.yml
-      include_tasks: container/main.yml
+    - name: include start_docker_rbd_mirror.yml
+      include_tasks: start_docker_rbd_mirror.yml
 
 - name: include configure_mirroring.yml
   include_tasks: configure_mirroring.yml