Enable RBD-backed Glance in openstack::all

Although openstack::glance supports using Ceph RBD as a backend,
the openstack::all class currently lacks parameters to enable
RBD-backed-glance in all-in-one installations.  This commit
adds the necessary parameters for users to use Ceph as a backend
for Glance.

This commit is based on the following change to master but is
not cherry-picked due to the quantum->neutron name change mandating
a few changes to the rspec tests:
https://review.openstack.org/#/c/47520/

Change-Id: I780e98fa28600d88607194fc0b4d82f26d72d063
Implements: blueprint rbd-backed-glance-in-all

manifests/all.pp

@@ -147,6 +147,9 @@ class openstack::all (
   # Glance Swift Backend
   $swift_store_user        = 'swift_store_user',
   $swift_store_key         = 'swift_store_key',
+  # Glance RBD Backend
+  $glance_rbd_user         = 'images',
+  $glance_rbd_pool         = 'images',
   # Nova
   $nova_admin_tenant_name  = 'services',
   $nova_admin_user         = 'nova',
@@ -329,6 +332,8 @@ class openstack::all (
     backend          => $glance_backend,
     swift_store_user => $swift_store_user,
     swift_store_key  => $swift_store_key,
+    rbd_store_user   => $glance_rbd_user,
+    rbd_store_pool   => $glance_rbd_pool,
     enabled          => $enabled,
   }
 

spec/classes/openstack_all_spec.rb

@@ -440,4 +440,26 @@ describe 'openstack::all' do
       )
     end
   end
+
+  context 'glance enabled and rbd as the backend' do
+    before do
+      params.merge!(
+        :quantum_user_password  => 'quantum_user_password',
+        :quantum_db_password    => 'quantum_db_password',
+        :bridge_interface       => 'eth0',
+        :ovs_local_ip           => '10.0.1.1',
+        :metadata_shared_secret => 'shared_md_secret',
+        :cinder_db_password     => 'cinder_db_password',
+        :cinder_user_password   => 'cinder_user_password',
+        :glance_backend         => 'rbd'
+      )
+    end
+
+    it 'should have glance::backend::rbd with default user/pool' do
+      should contain_class('glance::backend::rbd').with(
+        :rbd_store_user   => 'images',
+        :rbd_store_pool   => 'images'
+      )
+    end
+  end
 end