Update to depend on 1.8.1
Update to depend on 1.8.1



Revision created by MOE tool push_codebase.
MOE_MIGRATION=6566

aozarov/appengine-gcs-client,GoogleCloudPlatform/appengine-gcs-client,GoogleCloudPlatform/appengine-gcs-client,aozarov/appengine-gcs-client,GoogleCloudPlatform/appengine-gcs-client,aozarov/appengine-gcs-client