Tweak test and update goldrush dep

rebar.config

@@ -2,7 +2,7 @@
 {erl_first_files, ["src/lager_util.erl"]}.
 {deps, [
         {goldrush, ".*",
-            {git, "git://github.com/DeadZen/goldrush.git", {tag, "0.1.5"}}}
+            {git, "git://github.com/DeadZen/goldrush.git", {tag, "0.1.6"}}}
        ]}.
 
 {cover_enabled, true}.

test/lager_test_backend.erl

@@ -391,6 +391,7 @@ lager_test_() ->
                         lager:trace(?MODULE, [{fu, '!'}]),
                         lager:info([{foo, bar}], "hello world"),
                         lager:info([{ooh, car}], "hello world"),
+                        lager:info([{fu, bar}], "hello world"),
                         lager:trace(?MODULE, [{fu, '*'}]),
                         lager:info([{fu, bar}], "hello world"),
                         ?assertEqual(10, count()),