Disable flaky PeerGroup.peerPriority test pending a rewrite of it to be less flaky.

core/src/test/java/org/bitcoinj/core/PeerGroupTest.java

@@ -524,7 +524,7 @@ public class PeerGroupTest extends TestWithPeerGroup {
         assertTrue(!peerConnectedFuture.isDone() && peerDisconnectedFuture.isDone());
     }
 
-    @Test
+    //@Test  - disabled for now as this test is too flaky.
     public void peerPriority() throws Exception {
         final List<InetSocketAddress> addresses = Lists.newArrayList(
                 new InetSocketAddress("localhost", 2000),