Fix run/terminate race conditions.
Fix run/terminate race conditions.

 * synchronize run,terminate,stop,start on instance_uuid
 * don't surpress error when unfiltering instance, which
   can result in a zombified instance.
 * Fixes bug 956719
 * Remove debug raise

Change-Id: I8b2eaffdabfd5c1a9414adb1b5ed11e4c48711fc

n0ano/ganttclient