* Added metrics_collection management to ec2_asg module to switch ASG metrics on and off.
* Fixed typo in documentation of ec2_asg module
* Removed extra blank line in ec2_asg.py
* Docs fixes for ec2_asg module
* Added integration test for ec2_asg metrics flag
* Trying different syntax for ec2_asg test
In the ec2_asg integration tests there are a couple places where
parameters are specified twice (as bot `tag.Name` and `name:`) and
others where those parameters aren't needed for the state requested.
* Add some integration tests for ec2_asg.
* Remove exception handling from ec2_asg boto3 connection since it is handled in boto3_conn().
* Update test failure assertions
* Use yaml anchor for credentials and remove unnecessary dependencies.
* Move AWS boto3 module credentials tests to separate target
* Remove filters from tests
