Heat: Manage policy settings in heat-engine

The heat-engine service requires access to policy rules so that it can
enforce resource type policies. This change ensures the policy file and
the related oslo.policy options are configured in the heat-engine
service.

Conflicts:
	manifests/profile/base/heat/engine.pp

Resolved conflicts caused by absolute class names used in stable/train.
We replaced absolute class names by relative class names during ussuri
cycle following the updated lint rules.

Change-Id: I56511722315f265c6a88c2e112571fe70b6cebf4
Partial-Bug: #1983342
(cherry picked from commit b58a5dcb1c)
(cherry picked from commit ba98821216)

manifests/profile/base/heat/engine.pp

@@ -41,6 +41,7 @@ class tripleo::profile::base::heat::engine (
 
   if $step >= 4 or ( $step >= 3 and $sync_db ) {
     include ::heat::engine
+    include ::heat::policy
   }
 
 }

spec/classes/tripleo_profile_base_heat_engine_spec.rb

@@ -41,6 +41,7 @@ eos
         is_expected.to contain_class('tripleo::profile::base::heat::engine')
         is_expected.to contain_class('tripleo::profile::base::heat')
         is_expected.to_not contain_class('heat::engine')
+        is_expected.to_not contain_class('heat::policy')
       }
     end
 
@@ -54,6 +55,7 @@ eos
         is_expected.to contain_class('tripleo::profile::base::heat::engine')
         is_expected.to contain_class('tripleo::profile::base::heat')
         is_expected.to contain_class('heat::engine')
+        is_expected.to contain_class('heat::policy')
       }
     end
 
@@ -67,6 +69,7 @@ eos
         is_expected.to contain_class('tripleo::profile::base::heat::engine')
         is_expected.to contain_class('tripleo::profile::base::heat')
         is_expected.to_not contain_class('heat::engine')
+        is_expected.to_not contain_class('heat::policy')
       }
     end
 
@@ -80,6 +83,7 @@ eos
         is_expected.to contain_class('tripleo::profile::base::heat::engine')
         is_expected.to contain_class('tripleo::profile::base::heat')
         is_expected.to contain_class('heat::engine')
+        is_expected.to contain_class('heat::policy')
       }
     end