openqa/server: try enabling disk image generation, redux

rwmj has refreshed the i686 base image now, so let's try this
again.

roles/openqa/server/tasks/main.yml

@@ -121,13 +121,13 @@
   changed_when: "1 != 1"
   always_run: true
 
-#- name: Create hard disk images (this may take a long time!)
-#  command: "/root/openqa_fedora_tools/tools/createhdds.py all --clean"
-#  args:
-#    chdir: /var/lib/openqa/share/factory/hdd/
-#  environment:
-#    LIBGUESTFS_BACKEND: direct
-#  when: "diskcheck.rc > 0"
+- name: Create hard disk images (this may take a long time!)
+  command: "/root/openqa_fedora_tools/tools/createhdds.py all --clean"
+  args:
+    chdir: /var/lib/openqa/share/factory/hdd/
+  environment:
+    LIBGUESTFS_BACKEND: direct
+  when: "diskcheck.rc > 0"
 
 - name: Create exports file
   copy: src=exports dest=/etc/exports.d/openqa.exports owner=root group=root mode=0644