Adding failures to known group

Author: jkandasa

src/test/java/org/hawkular/client/test/alerts/PluginsTest.java

@@ -35,15 +35,15 @@ public PluginsTest() throws Exception {
 
     public static final String EMAIL_PLUGIN_NAME = "email";
 
-    @Test
+    @Test(groups={"known-failure"})
     public void findPlugins() {
         ClientResponse<String[]> response = client().alerts().findActionPlugins();
         Reporter.log("Alert available Plugins Result: " + response.toString(), true);
         Assert.assertTrue(response.isSuccess());
         Assert.assertTrue(response.getEntity().length > 0);
     }
 
-    @Test
+    @Test(groups={"known-failure"})
     public void findEmailPlugin() {
         ClientResponse<String[]> response = client().alerts().getActionPlugin(EMAIL_PLUGIN_NAME);
         Reporter.log("Alert Email Plugin variables Result: " + response.toString(), true);