Made settings in glance and nova flexible.

roles/horizon/tasks/main.yml

@@ -1,13 +1,5 @@
-# Build and install a docker image for horizon.
+# Run hpc/horizon
 ---
-- name: Make build and persistent directories
-  file:
-    path: "{{ item }}"
-    state: directory
-    mode: 0777
-  with_items:
-      - /srv/horizon
-
 - name: install service file.
   template:
     src: templates/horizon.service