* switch to boto3 and add support for application ELBs with target groups.
* use py23 compatible dict iterator.
* removing commented out fail_json calls
utilize sets to simplify logic
remove setting a redundant variable
add bounds checking in two places
add AWSRetry decorator - do we want this for other functions too?
change xrange to range so python3 doesn't fail
remove sorting lists of dicts; in python2 this returns None, in python3 this fails
* remove error variable from traceback.format_exc
* Remove boto2-style calls brought in by rebase
Old boto-style calls to `as_group` attributes break in boto3
Also remove module from legacy-PEP8 list
* Add parameter to target_group_arn option
* Fix HAS_BOTO3 check
* use tags.items() instead of iteritems
* import botocore
* Fixed bugs in deleting autoscaling groups
* make changes in deleting autoscaling groups pep8
* more pep8
* fix version
* fix bugs so local integration tests run
* fix launch config check
* reflect changed status for ASG updates
* Fix existing exception handling and use traceback.
Fix imports
* line length
* Fix notification setup
* Fix mutually exclusive arguments
Only one of the AvailabilityZones and VPCZoneIdentifier arguments should be provided to the CreateAutoScalingGroup call.
* Allow desired_capacity, min_size, max_size, launch_config_name to be derived from the existing ASG if not specified
Remove code updating dict after ASG already uses it
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