update the test to use the same API as 0.90

so backports will be simpler for now

Author: kimchy

src/test/java/org/elasticsearch/indices/mapping/UpdateMappingTests.java

@@ -78,7 +78,7 @@ public boolean apply(Object input) {
         assertThat(response.getCount(), equalTo((long) recCount));
 
         logger.info("checking all the fields are in the mappings");
-        String source = client().admin().indices().prepareGetMappings("test").setTypes("type").get().getMappings().get("test").get("type").source().string();
+        String source = client().admin().cluster().prepareState().get().getState().getMetaData().getIndices().get("test").getMappings().get("type").source().string();
         for (int rec = 0; rec < recCount; rec++) {
             assertThat(source, containsString("\"field" + rec + "\""));
         }