@Override public String toString() {
        return server.httpUri().toString();
      }
Ensure that Zipkin uses the correct resource path of /_index_template when creating index
template for ES 7.9 when priority is set, as opposed to ES < 7.8 that uses /_template/
zipkin-storage/elasticsearch/src/test/java/zipkin2/elasticsearch/ElasticsearchStorageTest.java