Update glance configuration file for backend

global file glance_backend_file parameters not take effect

Closes-Bug: #1888501

Change-Id: I3afd117633a84d342effb6baadf16fa42c16776c

ansible/roles/glance/defaults/main.yml

@@ -156,7 +156,7 @@ glance_tls_proxy_extra_volumes: "{{ glance_extra_volumes }}"
 glance_backends:
   - name: file
     type: file
-    enabled: true
+    enabled: "{{ glance_backend_file | bool }}"
   - name: http
     type: http
     enabled: true

ansible/roles/glance/templates/glance-api.conf.j2

@@ -63,8 +63,10 @@ default_backend = swift
 default_backend = file
 {% endif %}
 
+{% if glance_backend_file | bool %}
 [file]
 filesystem_store_datadir = /var/lib/glance/images/
+{% endif %}
 
 {% if glance_backend_ceph | bool %}
 [rbd]