_name attribute is used when providing generic error messages
(such as connection problems). As AnsibleAWSModule does not inherit
things from AnsibleModule by default, need to provide it.
* Add module_utils/aws/direct_connect.py for frequently used functions
* new AWS Direct Connect link aggregation group module with tests and placebo recordings
* remove extra argument
* Remove use of undefined var
* Fix param name for extra exception codes for AWSRetry to use.
* Fix undefined var and line length and metadata version number
* Fix copyright headers