Add multiplier for the dialer

Originally multipilier is default to 0, which will cause flodding if
backoff happens. Now setting multiplier to 1.6 which is the default
multiplier value in grpc.

Signed-off-by: Hanlin Shi <shihanlin9@gmail.com>

container/containerd/client.go

@@ -65,11 +65,10 @@ func Client(address, namespace string) (ContainerdClient, error) {
 		tryConn.Close()
 
 		connParams := grpc.ConnectParams{
-			Backoff: backoff.Config{
-				BaseDelay: baseBackoffDelay,
-				MaxDelay:  maxBackoffDelay,
-			},
+			Backoff: backoff.DefaultConfig,
 		}
+		connParams.Backoff.BaseDelay = baseBackoffDelay
+		connParams.Backoff.MaxDelay = maxBackoffDelay
 		gopts := []grpc.DialOption{
 			grpc.WithInsecure(),
 			grpc.WithContextDialer(dialer.ContextDialer),