Feature group testing (#50)

Summary:
Generated Feature Group controller code and wrote passing integration tests for the Feature Group controller.

Files Added:
- test/e2e/tests/test_feature_group.py - Contains Create and Delete integration test for feature group
- test/e2e/resources/feature_group.yaml - yaml file for feature group creation in integration testing.
- pkg/resource/feature_group/custom_delta.go - Sets default spec values for feature group fields (DisableGlueTableCreation and S3StorageConfig) if the user did not define them.

Files Edited:
- test/e2e/service_bootstrap.py - Attached AmazonSageMakerFeatureStoreAccess Role Policy to the SageMaker Execution Role for testing purposes. (Feature Store requires this permission for the Feature Group creation and access)
- generator.yaml - Commented out feature group from the ignore list. Also added feature group exceptions, hooks, and fields.
- pkg/resource/feature_group/delta.go - added the CustumSetDefault() function from custom_delta.go to the newResourceDelta() function.

Author: BriannaRoskind

apis/v1alpha1/ack-generate-metadata.yaml

@@ -1,14 +1,14 @@
 ack_generate_info:
-  build_date: "2021-06-22T20:41:21Z"
-  build_hash: 38e309d07369b1e33250473084f91db3894c4379
-  go_version: go1.16.4 darwin/amd64
-  version: v0.2.3
-api_directory_checksum: 650887de24f94277e21771990d1391198cce93c3
+  build_date: "2021-07-07T19:02:56Z"
+  build_hash: 6911f924191f5315747c8e81fbcbf29b4edc8cb1
+  go_version: go1.16.4 linux/amd64
+  version: v0.3.1
+api_directory_checksum: 66483eaa00d69d0952996efb66542595709e6a6d
 api_version: v1alpha1
 aws_sdk_go_version: v1.38.11
 generator_config_info:
-  file_checksum: 5116a83b119c80774a9e1910851a431b5bd55421
+  file_checksum: 476e48a7aa1700dc969a1be123b88edf95a24d9c
   original_file_name: generator.yaml
 last_modification:
   reason: API generation
-  timestamp: 2021-06-22 20:41:26.608413 +0000 UTC
+  timestamp: 2021-07-07 19:02:59.18477677 +0000 UTC