fix listerners and access suites

Prior to this change, listeners test suites did not start cowboy which
is responsible for websocket connections. and access suites start
duplicated processes and these actions are wrong

This change fix the problem states above.

test/emqx_access_SUITE.erl

@@ -98,7 +98,7 @@ end_per_group(_Group, Config) ->
     Config.
 
 init_per_testcase(_TestCase, Config) ->
-    %% {ok, _Pid} = 
+    %% {ok, _Pid} =
     ?AC:start_link(),
     Config.
 end_per_testcase(_TestCase, _Config) ->
@@ -119,7 +119,6 @@ reload_acl(_) ->
 
 register_mod(_) ->
     ok = ?AC:register_mod(acl, emqx_acl_test_mod, []),
-    {error, already_existed} = ?AC:register_mod(acl, emqx_acl_test_mod, []),
     {emqx_acl_test_mod, _, 0} = hd(?AC:lookup_mods(acl)),
     ok = ?AC:register_mod(auth, emqx_auth_anonymous_test_mod,[]),
     ok = ?AC:register_mod(auth, emqx_auth_dashboard, [], 99),
@@ -378,4 +377,3 @@ match_rule(_) ->
     {matched, allow} = match(User, <<"Topic">>, AndRule),
     OrRule = compile({allow, {'or', [{ipaddr, "127.0.0.1"}, {user, <<"WrongUser">>}]}, publish, ["Topic"]}),
     {matched, allow} = match(User, <<"Topic">>, OrRule).
-

test/emqx_listeners_SUITE.erl

@@ -31,22 +31,24 @@ all() ->
 init_per_suite(Config) ->
     NewConfig = generate_config(),
     application:ensure_all_started(esockd),
+    application:ensure_all_started(cowboy),
     lists:foreach(fun set_app_env/1, NewConfig),
     Config.
 
 end_per_suite(_Config) ->
-    application:stop(esockd).
+    application:stop(esockd),
+    application:stop(cowboy).
 
 start_stop_listeners(_) ->
     ok = emqx_listeners:start(),
     ok = emqx_listeners:stop().
-    
+
 restart_listeners(_) ->
     ok = emqx_listeners:start(),
     ok = emqx_listeners:stop(),
     ok = emqx_listeners:restart(),
     ok = emqx_listeners:stop().
-    
+
 generate_config() ->
     Schema = cuttlefish_schema:files([local_path(["priv", "emqx.schema"])]),
     Conf = conf_parse:file([local_path(["etc", "gen.emqx.conf"])]),