Wait for metrics to refresh before this assertion

Author: michaelklishin

deps/rabbitmq_management/test/rabbit_mgmt_http_SUITE.erl

@@ -2466,6 +2466,7 @@ format_output_test(Config) ->
     http_put(Config, "/vhosts/vh1", none, {group, '2xx'}),
     http_put(Config, "/permissions/vh1/guest", PermArgs, {group, '2xx'}),
     http_put(Config, "/queues/%2F/test0", QArgs, {group, '2xx'}),
+    timer:sleep(2000),
     assert_list([#{name => <<"test0">>,
                    consumer_capacity => 0,
                    consumer_utilisation => 0,
@@ -2479,7 +2480,7 @@ columns_test(Config) ->
     http_put(Config, "/queues/%2F/test", [{arguments, [{<<"foo">>, <<"bar">>}]}],
              {group, '2xx'}),
     Item = #{arguments => #{foo => <<"bar">>}, name => <<"test">>},
-    timer:sleep(1500),
+    timer:sleep(2000),
     [Item] = http_get(Config, "/queues?columns=arguments.foo,name", ?OK),
     Item = http_get(Config, "/queues/%2F/test?columns=arguments.foo,name", ?OK),
     http_delete(Config, "/queues/%2F/test", {group, '2xx'}),