Switch oslo.policy over to yaml

Upstream switched oslo.policy from JSON to YAML format
output in [1].

[1] https://review.opendev.org/#/c/732453/

Closes-Bug: #1885602

Depends-On: Iec610053a9250cb78c2a17bfc2c197bf55d9df86
Change-Id: Ieb6bc60eb2750a9f3f0539c2bd0176fabfebb30e

manifests/policy.pp

@@ -20,12 +20,12 @@
 #   Defaults to empty hash.
 #
 # [*policy_path*]
-#   (Optional) Path to the nova policy.json file
-#   Defaults to /etc/octavia/policy.json
+#   (Optional) Path to the octavia policy.yaml file
+#   Defaults to /etc/octavia/policy.yaml
 #
 class octavia::policy (
   $policies    = {},
-  $policy_path = '/etc/octavia/policy.json',
+  $policy_path = '/etc/octavia/policy.yaml',
 ) {
 
   include octavia::deps
@@ -34,9 +34,10 @@ class octavia::policy (
   validate_legacy(Hash, 'validate_hash', $policies)
 
   Openstacklib::Policy::Base {
-    file_path  => $policy_path,
-    file_user  => 'root',
-    file_group => $::octavia::params::group,
+    file_path   => $policy_path,
+    file_user   => 'root',
+    file_group  => $::octavia::params::group,
+    file_format => 'yaml',
   }
 
   create_resources('openstacklib::policy::base', $policies)

releasenotes/notes/change-oslo-policy-to-yaml-e4efbaeafa2fbb1c.yaml

@@ -0,0 +1,3 @@
+---
+fixes:
+  - Octavia switched oslo.policy from JSON to YAML format output.

spec/classes/octavia_policy_spec.rb

@@ -5,7 +5,7 @@ describe 'octavia::policy' do
   shared_examples_for 'octavia policies' do
     let :params do
       {
-        :policy_path => '/etc/octavia/policy.json',
+        :policy_path => '/etc/octavia/policy.yaml',
         :policies    => {
           'context_is_admin' => {
             'key'   => 'context_is_admin',
@@ -17,13 +17,14 @@ describe 'octavia::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',
-        :file_user  => 'root',
-        :file_group => 'octavia',
+        :key         => 'context_is_admin',
+        :value       => 'foo:bar',
+        :file_user   => 'root',
+        :file_group  => 'octavia',
+        :file_format => 'yaml',
       })
       is_expected.to contain_oslo__policy('octavia_config').with(
-        :policy_file => '/etc/octavia/policy.json',
+        :policy_file => '/etc/octavia/policy.yaml',
       )
     end
   end