Add a tag for the latest released image SHA for autopatch images (#4491)

* Add a tag for the latest released image SHA for autopatch images

* test with PT inference autopatch build

* only include SHA after the colon

* test with PT arm64 inference autopatch build

* Restore ['dlc_developer_config.toml']

dlc_developer_config.toml:
('Restore to '
 'https://raw.githubusercontent.com/aws/deep-learning-containers/master/dlc_developer_config.toml')

Author: sallyseok

src/patch_helper.py

@@ -2,6 +2,7 @@
 import boto3
 import concurrent.futures
 import json
+from datetime import datetime
 
 import constants
 
@@ -283,6 +284,12 @@ def conduct_autopatch_build_setup(pre_push_image_object: DockerImage, download_p
     )
     pre_push_image_object.info = info
     pre_push_image_object.context = context
+
+    # add latest released image SHA as an additional tag
+    datetime_str = datetime.now().strftime("%Y-%m-%d-%H-%M-%S")
+    sha_after_colon = latest_released_image_sha.split(":")[1]
+    pre_push_image_object.additional_tags.append(f"lastsha-{datetime_str}-{sha_after_colon}")
+
     return constants.SUCCESS