* Add aws/core.py function to check for specific AWS error codes
* Use sys.exc_info to get exception object if it isn't passed in
* Allow catching exceptions with is_boto3_error_code
* Replace from_code with is_boto3_error_code
* Return a type that will never be raised to support stricter type comparisons in Python 3+
* Use is_boto3_error_code in aws_eks_cluster
* Add duplicate-except to ignores when using is_boto3_error_code
* Add is_boto3_error_code to module development guideline docs
Create rds_instance_facts module using boto3.
Create common rds.py module_util library to be used by
rds_instance_facts and future RDS modules.
rds_instance_facts: use latest AWS helper methods
* Use `module.client` with `retry` to create AWS connection
* Return tags, using AWSRetry helper to backoff
* Use paginator to describe DB instances
* Further improve exception handling
* Fix RETURN documentation
update version_added
Co-authored-by: Michael De La Rue <jababubic.margoteen@spamgourmet.com>