Adding some websocket client upgrade logging

jetty-websocket/websocket-client/src/main/java/org/eclipse/jetty/websocket/client/io/UpgradeConnection.java

@@ -78,6 +78,7 @@ public class UpgradeConnection extends AbstractConnection
         @Override
         public void succeeded()
         {
+            LOG.debug("Upgrade Request Write Success");
             // Writing the request header is complete.
             super.succeeded();
             // start the interest in fill
@@ -87,6 +88,7 @@ public class UpgradeConnection extends AbstractConnection
         @Override
         public void failed(Throwable cause)
         {
+            LOG.warn("Upgrade Request Write Failure", cause);
             super.failed(cause);
             // Fail the connect promise when a fundamental exception during connect occurs.
             connectPromise.failed(cause);