Move _glance_available_stores to defaults

We need to define _glance_available_stores outside glance role to
use it in haproxy service definition.

It's a good idea to make `_glance_available_stores` public by moving it
out of role variables to role defaults beforehand.

Change-Id: Ieb10a0e5c9faf72c6bea4c45f7e216469971a1f3

defaults/main.yml

@@ -81,6 +81,7 @@ glance_default_store: file
 glance_additional_stores:
   - http
   - cinder
+glance_available_stores: "{{ [ glance_default_store ] + glance_additional_stores }}"
 glance_flavor: "{% if glance_default_store == 'rbd' %}keystone{% else %}keystone+cachemanagement{% endif %}"
 glance_show_image_direct_url: "{{ glance_default_store == 'rbd' }}"
 glance_show_multiple_locations: "{{ glance_default_store == 'rbd' }}"
@@ -261,7 +262,7 @@ glance_pip_packages:
   - python-swiftclient
   - systemd-python
   - warlock
-  - "{{ ('s3' in _glance_available_stores) | ternary('boto3', '') }}"
+  - "{{ ('s3' in glance_available_stores) | ternary('boto3', '') }}"
 
 # Specific pip packages provided by the user
 glance_user_pip_packages: []
@@ -274,7 +275,7 @@ glance_api_init_overrides: {}
 # With enabled uwsgi glance has broken functionality of
 # the interoperable import feature (and maybe smth else)
 # We don't use uwsgi if ceph is used to prevent chunking issues
-glance_use_uwsgi: "{{ ('ceph' not in _glance_available_stores) }}"
+glance_use_uwsgi: "{{ ('ceph' not in glance_available_stores) }}"
 
 ## Service Names
 glance_services:

tasks/main.yml

@@ -155,7 +155,7 @@
     openstack_service_venv_bin: "{{ (glance_install_method == 'source') | ternary(glance_bin, '') }}"
   when:
     - "glance_services['glance-api']['group'] in group_names"
-    - "'rbd' in _glance_available_stores"
+    - "'rbd' in glance_available_stores"
   tags:
     - ceph
 

templates/glance-api.conf.j2

@@ -28,7 +28,7 @@ image_cache_max_size = {{ glance_image_cache_max_size }}
 show_image_direct_url = {{ glance_show_image_direct_url }}
 show_multiple_locations = {{ glance_show_multiple_locations }}
 
-enabled_backends = {% for backend in _glance_available_stores %}{{ ('name' in backend) | ternary(backend['name'], backend) }}:{{ ('type' in backend) | ternary(backend['type'], backend) }}{% if not loop.last %},{% endif %}{% endfor %}
+enabled_backends = {% for backend in glance_available_stores %}{{ ('name' in backend) | ternary(backend['name'], backend) }}:{{ ('type' in backend) | ternary(backend['type'], backend) }}{% if not loop.last %},{% endif %}{% endfor %}
 
 
 [task]
@@ -81,12 +81,12 @@ flavor = {{ glance_flavor }}
 [glance_store]
 default_backend = {{ glance_default_store }}
 
-{% if 'file' in _glance_available_stores %}
+{% if 'file' in glance_available_stores %}
 [file]
 filesystem_store_datadir = {{ glance_system_user_home }}/{{ glance_images_local_directory }}/
 {% endif %}
 
-{% if 'swift' in _glance_available_stores %}
+{% if 'swift' in glance_available_stores %}
 [swift]
 swift_store_config_file = {{ glance_etc_dir }}/glance-swift-store.conf
 default_swift_reference = swift1
@@ -100,7 +100,7 @@ swift_store_retry_get_count = 5
 swift_store_endpoint_type = {{ glance_swift_store_endpoint_type }}
 {% endif %}
 
-{% if 'rbd' in _glance_available_stores %}
+{% if 'rbd' in glance_available_stores %}
 [rbd]
 rbd_store_pool = {{ glance_rbd_store_pool }}
 rbd_store_user = {{ glance_rbd_store_user }}

vars/main.yml

@@ -13,7 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-_glance_available_stores: "{{ [ glance_default_store ] + glance_additional_stores }}"
 _glance_is_first_play_host: "{{ (glance_services['glance-api']['group'] in group_names and inventory_hostname == (groups[glance_services['glance-api']['group']] | intersect(ansible_play_hosts)) | first) | bool }}"
 
 #