Iam cloudformation update, singificant cloudformation refactoring (#3218)

* IAM User Cloudformation Enhancements: update, delete, getatt.

* AWS::IAM::Policy Support

* Added unit tests for AWS:IAM:Policy for roles and groups.  Fixed bug related to groups.

* AWS:IAM:AccessKey CloudFormation support.

* Refactor of CloudFormation parsing.py methods to simplify and standardize how they call to the models.  Adjusted some models accordingly.

* Further model CloudFormation support changes to align with revised CloudFormation logic.  Mostly avoidance of getting resoure name from properties.

* Support for Kinesis Stream RetentionPeriodHours param.

* Kinesis Stream Cloudformation Tag Support.

* Added omitted 'region' param to boto3.client() calls in new tests.

Co-authored-by: Joseph Weitekamp <jweite@amazon.com>

tests/test_kinesis/test_kinesis_cloudformation.py

@@ -73,6 +73,12 @@ Resources:
     Properties:
       Name: MyStream
       ShardCount: 4
+      RetentionPeriodHours: 48
+      Tags:
+      - Key: TagKey1
+        Value: TagValue1
+      - Key: TagKey2
+        Value: TagValue2
 """.strip()
 
     cf_conn.create_stack(StackName=stack_name, TemplateBody=template)
@@ -83,6 +89,14 @@ Resources:
     stream_description = kinesis_conn.describe_stream(StreamName="MyStream")[
         "StreamDescription"
     ]
+    stream_description["RetentionPeriodHours"].should.equal(48)
+
+    tags = kinesis_conn.list_tags_for_stream(StreamName="MyStream")["Tags"]
+    tag1_value = [tag for tag in tags if tag["Key"] == "TagKey1"][0]["Value"]
+    tag2_value = [tag for tag in tags if tag["Key"] == "TagKey2"][0]["Value"]
+    tag1_value.should.equal("TagValue1")
+    tag2_value.should.equal("TagValue2")
+
     shards_provisioned = len(
         [
             shard
@@ -98,12 +112,27 @@ Resources:
         Type: AWS::Kinesis::Stream
         Properties:
           ShardCount: 6
+          RetentionPeriodHours: 24
+          Tags:
+          - Key: TagKey1
+            Value: TagValue1a
+          - Key: TagKey2
+            Value: TagValue2a
+
     """.strip()
     cf_conn.update_stack(StackName=stack_name, TemplateBody=template)
 
     stream_description = kinesis_conn.describe_stream(StreamName="MyStream")[
         "StreamDescription"
     ]
+    stream_description["RetentionPeriodHours"].should.equal(24)
+
+    tags = kinesis_conn.list_tags_for_stream(StreamName="MyStream")["Tags"]
+    tag1_value = [tag for tag in tags if tag["Key"] == "TagKey1"][0]["Value"]
+    tag2_value = [tag for tag in tags if tag["Key"] == "TagKey2"][0]["Value"]
+    tag1_value.should.equal("TagValue1a")
+    tag2_value.should.equal("TagValue2a")
+
     shards_provisioned = len(
         [
             shard