Prepare the final stable/train release

The stable/train is entering in extended manitenance. Because we have
seveal changes merged since the last release, a new release should be
created before that.

Depends-on: https://review.opendev.org/791063
Depends-on: https://review.opendev.org/791064
Depends-on: https://review.opendev.org/791204
Change-Id: I063eb5439337d08e2380bb0ad233be266899e7c0

metadata.json

@@ -19,15 +19,15 @@
         },
         {
             "name": "openstack/keystone",
-            "version_requirement": ">=15.4.0 <16.0.0"
+            "version_requirement": ">=15.5.0 <16.0.0"
         },
         {
             "name": "openstack/openstacklib",
-            "version_requirement": ">=15.4.0 <16.0.0"
+            "version_requirement": ">=15.5.0 <16.0.0"
         },
         {
             "name": "openstack/oslo",
-            "version_requirement": ">=15.4.0 <16.0.0"
+            "version_requirement": ">=15.5.0 <16.0.0"
         }
     ],
     "description": "Installs and configures OpenStack Aodh.",
@@ -69,5 +69,5 @@
     ],
     "source": "git://github.com/openstack/puppet-aodh.git",
     "summary": "Puppet module for OpenStack Aodh",
-    "version": "15.4.0"
+    "version": "15.5.0"
 }