EUCA-7962
Apparently "ThisScalingGroupName" is a made-up term. It's a needed thing in the dialog code, so leave it there and change it here on the way out the door, to "AutoScalingGroupName".
Merge pull request #174 from eucalyptus/EUCA-7962

EUCA-7962 - Ensure that we send "AutoScalingGroupName" when creating an alarm.