* Add helpful failure message if target_type=ip is not supported
Create test case for target_type=ip not supported
* Update elb_target_group module to latest standards
Use AnsibleAWSModule
Improve exception handling
Improve connection handling
(cherry picked from commit 29770a297a)
* New module - elb_target
* Work to add deregister functionality
* Add jurajseffer work on waiting for status change
* List the set of statuses as a choices list
* default target_status_timeout is 60
* Add 'unavailable' as a target status choice per API docs
* Add support to remove targets that are in unused state
* add support for availability zone selection
Fix deregistering targets from used target groups
Fix waiting for unused state for targets that have started deregistering