Fix lint errors

Signed-off-by: Mariana Franco <[email protected]>

Author: marianafranco

pkg/querier/queryrange/split_by_interval_test.go

@@ -2,7 +2,6 @@ package queryrange
 
 import (
 	"context"
-	"github.com/weaveworks/common/httpgrpc"
 	"io/ioutil"
 	"net/http"
 	"net/http/httptest"
@@ -11,6 +10,8 @@ import (
 	"testing"
 	"time"
 
+	"github.com/weaveworks/common/httpgrpc"
+
 	"github.com/prometheus/prometheus/promql/parser"
 	"github.com/stretchr/testify/require"
 	"github.com/weaveworks/common/middleware"