Renaming api/errors/etcd to api/errors/storage as it no longer

has any etcd specific dependencies.  Reference issue #17546

pkg/api/errors/storage/doc.go

@@ -15,4 +15,4 @@ limitations under the License.
 */
 
 // Package etcd provides conversion of etcd errors to API errors.
-package etcd
+package storage

pkg/api/errors/storage/storage.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package etcd
+package storage
 
 import (
 	"k8s.io/kubernetes/pkg/api/errors"