Updated openstack/openstack
Project: openstack-infra/devstack-gate  e9aa963b5eac7c841a5adeb86437c3823a4e47d3
null
Set CEILOMETER_PIPELINE_INTERVAL to 15

New incomming tempest tests around will check the notification are correctly
collected by ceilometer. But by default the notification are processed every
600 seconds. This is too high for the gate jobs. This patch reduce this
interval to 15 seconds to allow ceilometer tempest test to succeed in
less than 15 seconds instead of 10 minutes.

Change-Id: I4cb5d0eeb03b5b2868664dcb7546d6994217dc03