Linking ignored test to bug report

Author: barancev

java/client/test/org/openqa/selenium/ExecutingJavascriptTest.java

@@ -544,7 +544,7 @@ public void testShouldBeAbleToReturnADateObject() {
   @Ignore(IE)
   @Ignore(PHANTOMJS)
   @Ignore(SAFARI)
-  @Ignore(MARIONETTE)
+  @Ignore(value = MARIONETTE, issue = "https://github.com/mozilla/geckodriver/issues/904")
   public void shouldReturnDocumentElementIfDocumentIsReturned() {
     driver.get(pages.simpleTestPage);