Chore: Start harmonizing linting with plugin SDK (#25854)

* Chore: Harmonize linting with plugin SDK

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

* Chore: Fix linting issues

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

pkg/services/cleanup/cleanup_test.go

@@ -1,10 +1,11 @@
 package cleanup
 
 import (
-	"github.com/grafana/grafana/pkg/setting"
-	. "github.com/smartystreets/goconvey/convey"
 	"testing"
 	"time"
+
+	"github.com/grafana/grafana/pkg/setting"
+	. "github.com/smartystreets/goconvey/convey"
 )
 
 func TestCleanUpTmpFiles(t *testing.T) {