Consolidate waiters to a single file
* Add waiter message with token ID
* Add waiter
Add waiter for WAF change tokens
Working waiter for waf_condition module
Add support for waiters to waf_rule
* WAF data model refactor
* Fix ref to self.client
* Add custom waiters to aws_waf_web_acl
* Allow add/remove rule tasks to operate in parallel, then wait for their change tokens to complete
* Move waiter into run_func_with_change_token_backoff since it is generic to all WAF update operations
* Wait for deletes on waf_web_acl
* Remove always-wait
* Remove waiter retry catch
* stabilize ec2_vpc_subnet module
* Add waiters for ec2_vpc_subnet
Clean up integration tests
* Reenable CI for stabilized ec2_vpc_subnet tests
* rename waiters
* Use module_json_aws where applicable
Handle WaiterError first if waiting failed
* Fix traceback when tagging with keys/values that look like booleans
* Fix check mode with tags
* Add integration tests for tags that look like booleans and check mode
* Add waiter for deleting subnet
* Sleep a few seconds after using aws command line
This creates a way for us to use boto3's data-driven waiter support to use custom waiters where Boto3 hasn't implemented them yet.
The only waiter implemented so far is for VPC Route Tables to check that they exist, and this replaces some custom retry code.
