Unify policy file name

PROD-33618

Change-Id: I6559c67872ade0b58d7a5f56059b050b8a4c94eb
diff --git a/aodh/map.jinja b/aodh/map.jinja
index b28b9eb..125ec83 100644
--- a/aodh/map.jinja
+++ b/aodh/map.jinja
@@ -16,7 +16,7 @@
           'topics': 'notifications'
         },
         'oslo_policy': {
-          'policy_file': '/etc/aodh/policy.json'
+          'policy_file': 'policy.json'
         },
         'logging': {
           'app_name': 'aodh',
@@ -37,7 +37,7 @@
           'topics': 'notifications'
         },
         'oslo_policy': {
-          'policy_file': '/etc/aodh/policy.json'
+          'policy_file': 'policy.json'
         },
         'logging': {
           'app_name': 'aodh',