Allow to run cinder role in check mode

Always fetch config files as it's treated as safe operation.
On top of that handle case when there's no local config specified.

Change-Id: I5f5f36da96672679d6801c2a52c58d86657ca612

tasks/cinder_install_source.yml

@@ -42,6 +42,7 @@
     src: "{{ cinder_bin | dirname }}/etc/os-brick/rootwrap.d/os-brick.filters"
     dest: /etc/cinder/rootwrap.d/os-brick.filters
     state: link
+  ignore_errors: "{{ ansible_check_mode }}"
 
 - name: Copy cinder rootwrap filters
   command: >-

tasks/cinder_post_install.yml

@@ -103,6 +103,7 @@
   changed_when: false
   with_items: "{{ cinder_core_files }}"
   run_once: true
+  check_mode: false
 
 - name: Copy common config
   openstack.config_template.config_template:

tasks/main.yml

@@ -109,11 +109,17 @@
   tags:
     - cinder-config
 
-- import_tasks: cinder_cleanup_old_facts.yml
+- include_tasks: cinder_cleanup_old_facts.yml
+  args:
+    apply:
+      tags:
+        - cinder-config
   when:
+    - "'openstack_ansible' in ansible_local"
+    - "'cinder' in ansible_local['openstack_ansible']"
     - "'need_db_sync' in ansible_local['openstack_ansible']['cinder']"
   tags:
-    - cinder-config
+    - always
 
 - import_tasks: cinder_post_install.yml
   tags: