Remove glance_notifications from notification_topic

The default notification_topic in Glance has been changed from
'glance_notifications' to 'notifications' in grizzly-2.

Ceilometer was configured to also listen on the
'glance_notifications' notification_topic in addition to
'notifications' to patch this bug. It shouldn't anymore.

Change-Id: I3d797c7e849319a1e20ef3ecbf158e8b8579d450
Closes-bug: #1273876
(cherry picked from commit 924f18ffae174847d4c3d5ec5d5ae4241c9dd897)
Merge "Remove glance_notifications from notification_topic" into stable/havana
Allow log_dir to be set to false in order to disable file logging

This backward compatible commit allows a user to disable logging to
a directory for example if using syslog logging.

Change-Id: I8b496c311b9f26cab64c38d1cfd545784dfc7cab
Related-bug: #1269482
(cherry picked from commit 2b35c1a04ce6f28f700971c31d18af88b65a089e)
Release 3.1.0

Minor verson release for API changes related to glance and logging.
Bux fix to fix package installation on Ubuntu.

Change-Id: I27c6066558af8e2432703423ff312635113e8ca2
Fix alarm package params for ubuntu havana

The alarm-notifier and alarm-evaluator are
still part of ceilometer-common for havana ubuntu
packaging. The new packaging split is only available
for icehouse

Change-Id: I91098bd3f13ee4391dcf1b870705c0a0c5566acc
Merge "Fix alarm package params for ubuntu havana" into stable/havana
Havana: Fixtures: fix keystone branch name

Solve issue: « fatal: ambiguous argument 'stable/havana': unknown
revision or path not in the working tree. »

Change-Id: If4a484010e4f8a3fd8aa6f0f5434943194637331
Merge "Allow log_dir to be set to false in order to disable file logging" into stable/havana
Merge "Havana: Fixtures: fix keystone branch name" into stable/havana