Replace check for integration tests. (#110707)

* Replace check for integration tests.
* Revert changes in pkg/tsdb/mysql packages.
* Fix formatting of few tests.

pkg/api/pluginproxy/ds_proxy_test.go

@@ -53,6 +53,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/user"
 	"github.com/grafana/grafana/pkg/setting"
 	"github.com/grafana/grafana/pkg/tests/testsuite"
+	"github.com/grafana/grafana/pkg/util/testutil"
 	"github.com/grafana/grafana/pkg/web"
 )
 
@@ -61,9 +62,8 @@ func TestMain(m *testing.M) {
 }
 
 func TestIntegrationDataSourceProxy_routeRule(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping integration test in short mode")
-	}
+	testutil.SkipIntegrationTestInShortMode(t)
+
 	cfg := &setting.Cfg{}
 
 	t.Run("Plugin with routes", func(t *testing.T) {