Set correct permissions for rootwrap.d

Recursive task against /etc/cinder/rootwrap.d set directory permissions
to 0640 as well, which is not really valid. Also it was not idempotent
with dir creation from pre-install step.

Change-Id: Idbd09c78943d954f42f89acce40096c3754024be

tasks/glance_install.yml

@@ -96,6 +96,7 @@
     - path: "{{ glance_etc_dir }}/rootwrap.d"
       owner: "root"
       group: "root"
+      mode: "0750"
     - path: "/var/cache/glance"
     - path: "{{ glance_system_user_home }}"
     - path: "{{ glance_system_user_home }}/cache"

tasks/glance_post_install.yml

@@ -152,7 +152,7 @@
     path: "{{ glance_etc_dir }}/rootwrap.d"
     owner: "root"
     group: "root"
-    mode: "0640"
+    mode: "u=rwX,g=rX,o="
     recurse: true
 
 - name: Run the systemd mount role