AWSRetry: allow retrying on additional ClientError exceptions (#28483)

* Added the ability to extend the exception list in CloudRetry

* AWSRetry boto and boto compatible

* Updated tests to reflect boto/boto3

* Added boto to shippable requirements

* Have base_class and added_exceptions default to None in CloudRetry

AWSRetry - only retry on boto3 exceptions and remove boto requirement from tests

* Make requested changes.

lib/ansible/module_utils/ec2.py

@@ -72,7 +72,7 @@ class AWSRetry(CloudRetry):
         return error.response['Error']['Code']
 
     @staticmethod
-    def found(response_code):
+    def found(response_code, catch_extra_error_codes):
         # This list of failures is based on this API Reference
         # http://docs.aws.amazon.com/AWSEC2/latest/APIReference/errors-overview.html
         #
@@ -88,12 +88,11 @@ class AWSRetry(CloudRetry):
             'InternalFailure', 'InternalError', 'TooManyRequestsException',
             'Throttling'
         ]
+        if catch_extra_error_codes:
+            retry_on.extend(catch_extra_error_codes)
 
         not_found = re.compile(r'^\w+.NotFound')
-        if response_code in retry_on or not_found.search(response_code):
-            return True
-        else:
-            return False
+        return response_code in retry_on or not_found.search(response_code)
 
 
 def boto3_conn(module, conn_type=None, resource=None, region=None, endpoint=None, **params):