Add group to policy management

The move of policy.json into code means the file may not exist. We've
added support to ensure that the file exists in the openstacklib but we
need to make sure the permissions are right for each service. This adds
the group information to the policies so it works right.

Depends-On: I26e8b1384f4f69712da9d06a4c565dfd1f17c9ed
Related-Bug: #1742154
Change-Id: I10b322d05042fdef23758d46906cf57aa9def97f

manifests/params.pp

@@ -6,6 +6,7 @@ class zaqar::params {
   include ::openstacklib::defaults
 
   $client_package_name = 'python-zaqarclient'
+  $group               = 'zaqar'
 
   case $::osfamily {
     'RedHat': {

manifests/policy.pp

@@ -20,7 +20,7 @@
 #   Defaults to empty hash.
 #
 # [*policy_path*]
-#   (optional) Path to the nova policy.json file
+#   (optional) Path to the zaqar policy.json file
 #   Defaults to /etc/zaqar/policy.json
 #
 class zaqar::policy (
@@ -29,11 +29,14 @@ class zaqar::policy (
 ) {
 
   include ::zaqar::deps
+  include ::zaqar::params
 
   validate_hash($policies)
 
   Openstacklib::Policy::Base {
-    file_path => $policy_path,
+    file_path  => $policy_path,
+    file_user  => 'root',
+    file_group => $::zaqar::params::group,
   }
 
   create_resources('openstacklib::policy::base', $policies)

spec/classes/zaqar_policy_spec.rb

@@ -17,8 +17,10 @@ describe 'zaqar::policy' do
 
     it 'set up the policies' do
       is_expected.to contain_openstacklib__policy__base('context_is_admin').with({
-        :key   => 'context_is_admin',
-        :value => 'foo:bar'
+        :key        => 'context_is_admin',
+        :value      => 'foo:bar',
+        :file_user  => 'root',
+        :file_group => 'zaqar',
       })
       is_expected.to contain_oslo__policy('zaqar_config').with(
         :policy_file => '/etc/zaqar/policy.json',