vendor: upgrade Prometheus dependencies

Signed-off-by: Gyu-Ho Lee <gyuhox@gmail.com>

cmd/vendor/github.com/grpc-ecosystem/go-grpc-prometheus/util.go

@@ -6,9 +6,19 @@ package grpc_prometheus
 import (
 	"strings"
 
+	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 )
 
+type grpcType string
+
+const (
+	Unary        grpcType = "unary"
+	ClientStream grpcType = "client_stream"
+	ServerStream grpcType = "server_stream"
+	BidiStream   grpcType = "bidi_stream"
+)
+
 var (
 	allCodes = []codes.Code{
 		codes.OK, codes.Canceled, codes.Unknown, codes.InvalidArgument, codes.DeadlineExceeded, codes.NotFound,
@@ -25,3 +35,16 @@ func splitMethodName(fullMethodName string) (string, string) {
 	}
 	return "unknown", "unknown"
 }
+
+func typeFromMethodInfo(mInfo *grpc.MethodInfo) grpcType {
+	if mInfo.IsClientStream == false && mInfo.IsServerStream == false {
+		return Unary
+	}
+	if mInfo.IsClientStream == true && mInfo.IsServerStream == false {
+		return ClientStream
+	}
+	if mInfo.IsClientStream == false && mInfo.IsServerStream == true {
+		return ServerStream
+	}
+	return BidiStream
+}