Make JettyConnectorThreadPool#newThread public to comply with Jetty 9…

….4.22.v20191022

Signed-off-by: Jan Supol <jan.supol@oracle.com>

containers/jetty-http/src/main/java/org/glassfish/jersey/jetty/JettyHttpContainerFactory.java

@@ -286,14 +286,18 @@ public static Server createServer(final URI uri,
         return server;
     }
 
+    // TODO: Use https://www.eclipse.org/jetty/javadoc/current/org/eclipse/jetty/util/thread/QueuedThreadPool.html
+    //  #%3Cinit%3E(int,int,int,int,java.util.concurrent.BlockingQueue,java.lang.ThreadGroup,java.util.concurrent.ThreadFactory)
+    //
+    //  Keeping this for backwards compatibility for the time being
     private static final class JettyConnectorThreadPool extends QueuedThreadPool {
         private final ThreadFactory threadFactory = new ThreadFactoryBuilder()
                 .setNameFormat("jetty-http-server-%d")
                 .setUncaughtExceptionHandler(new JerseyProcessingUncaughtExceptionHandler())
                 .build();
 
         @Override
-        protected Thread newThread(Runnable runnable) {
+        public Thread newThread(Runnable runnable) {
             return threadFactory.newThread(runnable);
         }
     }