Add new fields: StorageClass, TimeDeleted, and Updated.
Add new fields: StorageClass, TimeDeleted, and Updated.

blowmage/gcloud-golang,proppy/gcloud-golang,googleapis/google-cloud-go,ptomasroos/gcloud-golang,blowmage/gcloud-golang,michael-grosshans/google-cloud-go,roth1002/gcloud-golang,googleapis/google-cloud-go,Maksadbek/gcloud-golang,hsinhoyeh/gcloud-golang,hsinhoyeh/gcloud-golang,michael-grosshans/google-cloud-go,roth1002/gcloud-golang,Maksadbek/gcloud-golang,googleapis/google-cloud-go,ptomasroos/gcloud-golang,proppy/gcloud-golang,googleapis/google-cloud-go