Add missing Id field in route 53 change response.
Report route53 changes immediately as INSYNC.

This avoids leaving changes in a perennial PENDING limbo.
Fix bug with autoscaling in non-default region.

The bug appeared when using a region different than 'us-east-1'
and caused KeyError when accessing launch_configurations.

Rename the global autoscaling backend to reduce chances of similar naming issues.
Merge pull request #255 from mrucci/route53-missing-response-id

Add missing Id field in route 53 change response.
Merge pull request #256 from mrucci/route53-response-insync

Report route53 changes immediately as INSYNC.
Merge pull request #257 from mrucci/autoscaling-fix-multi-region

Fix bug with autoscaling in non-default region.
Merge remote-tracking branch 'upstream/master'