Prepare new minor release for victoria ga

This patch is to create a new minor release, which include the fix[1]
for incomplete aodh-expirer support which was introduced in V cycle[2].

[1] https://review.opendev.org/#/c/755932/
[2] https://review.opendev.org/#/c/746241/

Change-Id: I4bdf2c152940a4b8fe75b39b3d4bc589b8adbf02

metadata.json

@@ -67,5 +67,5 @@
     ],
     "source": "git://github.com/openstack/puppet-aodh.git",
     "summary": "Puppet module for OpenStack Aodh",
-    "version": "17.4.1"
+    "version": "17.5.0"
 }