Fixed TestBucketStore_ManyParts_e2e

https://app.circleci.com/pipelines/github/thanos-io/thanos/5120/workflows/efd2a21d-13b7-4035-99e3-cb1af8023694/jobs/13809

This fail is only visible for anyone from Thanos Team proposing PR, due
to extra tests against bucket providers.

Signed-off-by: Bartlomiej Plotka <[email protected]>

Author: bwplotka

pkg/store/bucket_e2e_test.go

@@ -196,6 +196,8 @@ func prepareStoreWithTestBlocks(t testing.TB, dir string, bkt objstore.Bucket, m
 
 // TODO(bwplotka): Benchmark Series.
 func testBucketStore_e2e(t *testing.T, ctx context.Context, s *storeSuite) {
+	t.Helper()
+
 	mint, maxt := s.store.TimeRange()
 	testutil.Equals(t, s.minTime, mint)
 	testutil.Equals(t, s.maxTime, maxt)