* Add tags to ecs_task
remove older reference to credentials
* uncomment shell commands to enable/disable account settings
* Fix documentation and pep8 issues
* fix review items for ecs_task tags
use missing_required_lib for tags
change fail_json message to suggested message
switch from task_tags to tags for consisitency
* Add import for missing_required_lib function
* Tidy put-account-setting tasks and add permission
Using `environment` and `command` rather than `shell` avoids the
need for `no_log` and means that people can fix the problem
* update version added for ecs_task tags
* fix tests after removal of ansible_facts from ecs_service_info, add delay when service is still draining
* Add documentation for sanity tests
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