Add per module policy service refresh

Updating the policies for this project should only
refresh the services that reads it.

Change-Id: I42153ec891feb569a9614166104be5382d893f96
(cherry picked from commit c38323518b)

manifests/deps.pp

@@ -30,7 +30,7 @@ class barbican::deps {
 
   # policy config should occur in the config block also.
   Anchor['barbican::config::begin']
-  -> Openstacklib::Policy<||>
+  -> Openstacklib::Policy<| tag == 'barbican' |>
   ~> Anchor['barbican::config::end']
 
   # barbican-api-paste.ini config should occur in the config block also.

manifests/policy.pp

@@ -67,6 +67,7 @@ class barbican::policy (
     file_group   => $::barbican::params::group,
     file_format  => 'yaml',
     purge_config => $purge_config,
+    tag          => 'barbican',
   }
 
   create_resources('openstacklib::policy', { $policy_path => $policy_parameters })

spec/classes/barbican_policy_spec.rb

@@ -33,6 +33,7 @@ describe 'barbican::policy' do
           :file_group   => 'barbican',
           :file_format  => 'yaml',
           :purge_config => false,
+          :tag          => 'barbican',
         )
         is_expected.to contain_oslo__policy('barbican_config').with(
           :enforce_scope        => false,
@@ -63,6 +64,7 @@ describe 'barbican::policy' do
           :file_group   => 'barbican',
           :file_format  => 'yaml',
           :purge_config => true,
+          :tag          => 'barbican',
         )
         is_expected.to contain_oslo__policy('barbican_config').with(
           :enforce_scope        => false,