fix tests for when index doesnt exist

Author: jcantrill

src/test/java/io/fabric8/elasticsearch/plugin/kibana/KibanaSeedTest.java

@@ -83,6 +83,7 @@ private void givenDocumentExistFor(String index, String type, String id, boolean
     }
 
     private void givenCopyKibanaIndexIsSuccessful() throws InterruptedException, ExecutionException, IOException {
+        when(pluginClient.indexExists(".kibana")).thenReturn(true);
         CreateIndexResponse response = mock(CreateIndexResponse.class);
         when(pluginClient.copyIndex(anyString(), anyString(), Matchers.<String>anyVararg())).thenReturn(response );
     }