Don't keep TaskScheduler busy when DBPartition is disabled
Don't keep TaskScheduler busy when DBPartition is disabled

Change-Id: I8bf3caee87dc5914bebedcfd6569ee730acfea24
Partial-Bug: 1548570

rombie/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,codilime/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,codilime/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,codilime/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller