Gossip Comm probe: use gRPC dialOpts given

The probe implementation checks if the dial options is empty
And then makes it insecure, but actually this slice of DialOpts
can't be empty from the code flow.

Change-Id: Ibfc787078cbf7bc4d343c48f225dfcd30822f41f
Signed-off-by: Yacov Manevich <yacovm@il.ibm.com>

gossip/comm/comm_impl.go

@@ -60,6 +60,10 @@ func SetDialTimeout(timeout time.Duration) {
 }
 
 func (c *commImpl) SetDialOpts(opts ...grpc.DialOption) {
+	if len(opts) == 0 {
+		c.logger.Warning("Given an empty set of grpc.DialOption, aborting")
+		return
+	}
 	c.opts = opts
 }
 
@@ -262,13 +266,7 @@ func (c *commImpl) Probe(remotePeer *RemotePeer) error {
 		return fmt.Errorf("Stopping")
 	}
 	c.logger.Debug("Entering, endpoint:", endpoint, "PKIID:", pkiID)
-	var err error
-
-	opts := c.opts
-	if opts == nil {
-		opts = []grpc.DialOption{grpc.WithInsecure(), grpc.WithTimeout(dialTimeout)}
-	}
-	cc, err := grpc.Dial(endpoint, append(opts, grpc.WithBlock())...)
+	cc, err := grpc.Dial(remotePeer.Endpoint, append(c.opts, grpc.WithBlock())...)
 	if err != nil {
 		c.logger.Debug("Returning", err)
 		return err