test: ensure emqx_connector is loaded

apps/emqx_authz/test/emqx_authz_mnesia_SUITE.erl

@@ -31,7 +31,7 @@ groups() ->
 
 init_per_suite(Config) ->
     ok = emqx_common_test_helpers:start_apps(
-           [emqx_conf, emqx_authz],
+           [emqx_connector, emqx_conf, emqx_authz],
            fun set_special_configs/1
           ),
     Config.