Adding openstack upgrade action

actions.yaml

@@ -1,2 +1,4 @@
 git-reinstall:
   description: Reinstall glance from the openstack-origin-git repositories.
+openstack-upgrade:
+  description: Perform openstack upgrades.

actions/openstack-upgrade

@@ -0,0 +1 @@
+openstack_upgrade.py

actions/openstack_upgrade.py

@@ -0,0 +1,25 @@
+#!/usr/bin/python
+import sys
+
+sys.path.append('hooks/')
+
+from charmhelpers.contrib.openstack.utils import (
+    openstack_upgrade_available,
+    juju_log
+)
+
+from glance_utils import (
+    do_openstack_upgrade,
+    register_configs
+)
+
+CONFIGS = register_configs()
+
+def openstack_upgrade():
+    if openstack_upgrade_available('glance-common'):
+        juju_log('Upgrading OpenStack release')
+        do_openstack_upgrade(CONFIGS)
+
+
+if __name__ == '__main__':
+    openstack_upgrade()