UPSTREAM: coreos/rkt: <drop>: Workaround etcd310 / grpc incompat
@@ -841,7 +841,7 @@ var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion3
+const _ = grpc.SupportPackageIsVersion4
// Client API for PublicAPI service
