Chore: Fix flaky sqlstore annotation test (#28527)

pkg/services/sqlstore/annotation.go

@@ -35,7 +35,7 @@ func (r *SqlAnnotationRepo) Save(item *annotations.Item) error {
 	return inTransaction(func(sess *DBSession) error {
 		tags := models.ParseTagPairs(item.Tags)
 		item.Tags = models.JoinTagPairs(tags)
-		item.Created = time.Now().UnixNano() / int64(time.Millisecond)
+		item.Created = timeNow().UnixNano() / int64(time.Millisecond)
 		item.Updated = item.Created
 		if item.Epoch == 0 {
 			item.Epoch = item.Created
@@ -81,7 +81,7 @@ func (r *SqlAnnotationRepo) Update(item *annotations.Item) error {
 			return errors.New("Annotation not found")
 		}
 
-		existing.Updated = time.Now().UnixNano() / int64(time.Millisecond)
+		existing.Updated = timeNow().UnixNano() / int64(time.Millisecond)
 		existing.Text = item.Text
 
 		if item.Epoch != 0 {

pkg/services/sqlstore/annotation_test.go

@@ -11,6 +11,8 @@ import (
 )
 
 func TestAnnotations(t *testing.T) {
+	mockTimeNow()
+	defer resetTimeNow()
 	InitTestDB(t)
 
 	Convey("Testing annotation saving/loading", t, func() {