Prepare the final stable/ussuri release

Change-Id: I2239e39ad1b8cd8de0b34fcd6437fd1ed6c8dca6

metadata.json

@@ -11,7 +11,7 @@
         },
         {
             "name": "openstack/openstacklib",
-            "version_requirement": ">=16.3.0 <17.0.0"
+            "version_requirement": ">=16.4.0 <17.0.0"
         }
     ],
     "description": "Installs and configures OpenStack Oslo.",
@@ -59,5 +59,5 @@
     ],
     "source": "git://github.com/openstack/puppet-oslo.git",
     "summary": "Puppet module for OpenStack Oslo",
-    "version": "16.3.0"
+    "version": "16.4.0"
 }