Set glance control_exchange to 'glance'

Glance control_exchange in glance-api.conf wasn't set
and glance used default value for this - 'openstack'.
So, exchange 'glance' and queue 'glance' didn't exist in rabbit.
But ceilometer as default glance control exchange uses 'glance'.
This patch fixes the fix for this problem and change-id as well

Closes-bug: #1335891

Change-Id: Idd1566dd507878b2f01c2d0ff9956dedc77a4461
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
Merge "Set glance control_exchange to 'glance'"