Create image cache directory with right permissions

When not using provision role we still want to have image cache
directory to be readable by non_root_user.
By default it's /var/cache/tripleo-quickstart/images, so it should
be created by root.

Change-Id: I40d54329ad2fdcfcee8df0afc8e672f0381a4164

roles/fetch-images/tasks/main.yml

@@ -14,6 +14,10 @@
   file:
     path: "{{ image_cache_dir }}"
     state: directory
+    owner: "{{ non_root_user }}"
+    group: "{{ non_root_group }}"
+    mode: "ug+rwx"
+  become: true
 
 - include: fetch.yml
   vars:

roles/provision/remote/tasks/main.yml

@@ -117,16 +117,6 @@
     ansible_host: "{{ virthost }}"
     ansible_private_key_file: "{{ virt_host_key }}"
 
-# Create the image_cache_dir
-- name: Ensure image cache directory exists
-  file:
-    path: "{{ image_cache_dir }}"
-    state: directory
-    owner: "{{ non_root_user }}"
-    group: "{{ non_root_group }}"
-    mode: "ug+rwx"
-  become: true
-
 # Create the volume pool directory if it doesn't already exist.  This
 # will be the target of the libvirt volume pool we create in the next
 # task.