ceph-common: explicitly create the directory portion of the iso path

This will help if the path to the iso exists in the originating server but not
in the remote paths. This issue is not seen if using /tmp/file.iso but does
show up when using nested paths.

Signed-off-by: Alfredo Deza <adeza@redhat.com>

Resolves: rhbz#1355762

roles/ceph-common/tasks/pre_requisites/prerequisite_rh_storage_iso_install.yml

@@ -6,7 +6,13 @@
   with_items:
     - "{{ ceph_stable_rh_storage_mount_path }}"
     - "{{ ceph_stable_rh_storage_repository_path }}"
-    - "{{ ceph_stable_rh_storage_iso_path }}"
+
+- name: ensure destination iso directory exists
+  file:
+    path: "{{ ceph_stable_rh_storage_iso_path | dirname }}"
+    state: directory
+    recurse: yes
+  when: "'{{ ceph_stable_rh_storage_iso_path | dirname }}' != '/'"
 
 - name: fetch the red hat storage iso from the ansible server
   copy: