qfix: Add net.Dialer with dialTimeout for nsmgr

[denis-tingaikin]

Signed-off-by: Denis Tingaikin denis.tingajkin@xored.com

Motivation

Since we are not using a grpc.WithBlock option in nsmgr (see at networkservicemesh/sdk#1083)

The grpc is not using our dialTimeout(https://github.com/networkservicemesh/sdk/blob/main/pkg/networkservice/common/dial/client.go#L52) see at

1. https://github.com/grpc/grpc-go/blob/master/internal/transport/http2_client.go#L173
2. https://github.com/grpc/grpc-go/blob/master/rpc_util.go#L261-L263

So to avoid problems with the long dial we can simply add for nsmgr dialer with a timeout.

Note: This is required for heal rework networkservicemesh/sdk#1113

To reproduce the problem with long dial just run this:

func TestDial2(t *testing.T) {
   ctx, cancel := context.WithTimeout(context.Background(), 10*time.Millisecond)
   defer cancel()
   cc, err := grpc.DialContext(ctx, "142.251.1.106:53", grpc.WithInsecure())
   if err != nil {
      panic(err.Error())
   }
   if cc == nil {
      panic(cc)
   }
   client := networkservice.NewNetworkServiceClient(cc)
   conn, err := client.Request(context.Background(), &networkservice.NetworkServiceRequest{})
   if err != nil {
      panic(err.Error())
   }
   if conn == nil {
      panic(cc)
   }
}