Add ClusterRole to get, list and watch pullsubscriptions and storages (#292)
Add ClusterRole to get, list and watch pullsubscriptions and storages (#292)

* Add ClusterRole to get, list and watch pullsubscriptions and storages

* rename the name and label to be consisitent with the source spec

* rename pullsubscription name and label to be consisitent with source spec

* modify comment

* change api groups to xxx.cloud.google.com

* modify comment format

google/knative-gcp,google/knative-gcp