server,tests: Increasing test timeout a bit to make it less fragile on slow computer

Author: barancev

java/server/test/org/openqa/grid/internal/SessionTimesOutTest.java

@@ -77,7 +77,7 @@ public void beforeRelease(TestSession session) {
   /**
    * check that the proxy is freed after it times out.
    */
-  @Test(timeout = 2000)
+  @Test(timeout = 3000)
   public void testTimeout() throws InterruptedException {
 
     Registry registry = Registry.newInstance();