Set glance images dir owners each time

After a deployment of Queens, glance's images directory comes up with
ownership of `root:root` when it should be `glance:glance`. This
prevents an end user from uploading an image.

This patch removes the stat check of the images directory and always
ensures the directory is created. If the directory already exists,
the create task will ensure that the directory has its ownership
set appropriately.

Closes-Bug: 1742951
Change-Id: I286d6fbdfdec932ea031916f5460710a23d68374

tasks/glance_pre_install.yml

@@ -54,12 +54,6 @@
     - { path: "{{ glance_system_user_home }}/cache/registry" }
     - { path: "{{ glance_system_user_home }}/scrubber" }
 
-- name: Stat the images directory
-  stat:
-    path: "{{ glance_system_user_home }}/images/"
-  changed_when: false
-  register: images_stat
-
 - name: Create glance images dir
   file:
     path: "{{ glance_system_user_home }}/images/"
@@ -67,8 +61,6 @@
     owner: "{{ glance_system_user_name }}"
     group: "{{ glance_system_group_name }}"
     mode: "0755"
-  when:
-    - not images_stat.stat.exists | default(false) | bool
 
 - name: Test for log directory or link
   shell: |