Push subscriber mode for wks in gcp (iam migration, tenant info migration)
WKS service cannot properly run in current GCP env (cloud run) due to environment requirements, specifically requirement that deployed service should serve HHTP requests. Should be added push mode to WKS , with endpoint that will serve PubSub requests.
WKS gcp uses deprecated IAM sign jwt requests, to create tokens for communication with other services. Need to migrate to new IAM token provisioning.
WKS in gcp using deprecated tenant info provisioning from Datastore. Need to migrate to Partition service as tenant info provider.
Integration tests have hardcoded values Need to unhardcode them.