Make xuserid header optional for GC

NOTICE

@@ -29,7 +29,7 @@ The following software have components provided under the terms of this license:
 - google-cloud-storage (from https://github.com/GoogleCloudPlatform/google-cloud-python, https://github.com/googleapis/python-storage)
 - google-crc32c (from https://github.com/googleapis/python-crc32c)
 - google-resumable-media (from https://github.com/googleapis/google-resumable-media-python)
-- googleapis-common-protos (from https://github.com/googleapis/google-cloud-python/tree/main/packages/googleapis-common-protos)
+- googleapis-common-protos (from https://pypi.org/project/googleapis-common-protos/)
 - kubernetes (from https://github.com/kubernetes-client/python)
 - packaging (from https://pypi.org/project/packaging/, https://pypi.org/project/packaging/22.0/)
 - proto-plus (from https://pypi.org/project/proto-plus/)

deployment/default-policies/entitlements.rego

@@ -6,7 +6,7 @@ headers = {
     "Content-Type": "application/json",
     "data-partition-id":input.datapartitionid,
     "Authorization": sprintf("Bearer %v", [input.token]),
-    "x-user-id": input.xuserid,
+    "x-user-id": object.get(input, "xuserid", null),
     "Accept": "application/json"
 }
 

deployment/default-policies/legal.rego

@@ -6,7 +6,7 @@ headers = {
     "content-type": "application/json",
     "data-partition-id":input.datapartitionid,
     "authorization": sprintf("Bearer %v", [input.token]),
-    "x-user-id": input.xuserid,
+    "x-user-id": object.get(input, "xuserid", null),
     "accept": "application/json"
 }