systemTags are sometimes ommitted in the request (#84)

Author: jaymccon

src/cloudformation_cli_python_lib/utils.py

@@ -50,7 +50,7 @@ class RequestData:
     providerLogGroupName: str
     logicalResourceId: str
     resourceProperties: Mapping[str, Any]
-    systemTags: Mapping[str, Any]
+    systemTags: Optional[Mapping[str, Any]] = None
     stackTags: Optional[Mapping[str, Any]] = None
     # platform credentials aren't really optional, but this is used to
     # zero them out to prevent e.g. accidental logging

tests/lib/utils_test.py

@@ -89,7 +89,6 @@ def test_handler_request_serde_roundtrip():
             "logicalResourceId": "myBucket",
             "resourceProperties": {},
             "previousResourceProperties": None,
-            "systemTags": {"aws:cloudformation:stack-id": "SampleStack"},
             "stackTags": {"tag1": "abc"},
             "previousStackTags": {"tag1": "def"},
         },