shutter-service: fix precommit ci

Author: blockchainluffy

rolling-shutter/keyperimpl/shutterservice/newblock_test.go

@@ -9,6 +9,8 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/shutter-network/contracts/v2/bindings/shutterregistry"
+	"gotest.tools/assert"
+
 	obskeyper "github.com/shutter-network/rolling-shutter/rolling-shutter/chainobserver/db/keyper"
 	corekeyperdatabase "github.com/shutter-network/rolling-shutter/rolling-shutter/keyper/database"
 	"github.com/shutter-network/rolling-shutter/rolling-shutter/keyper/epochkghandler"
@@ -21,7 +23,6 @@ import (
 	"github.com/shutter-network/rolling-shutter/rolling-shutter/medley/identitypreimage"
 	"github.com/shutter-network/rolling-shutter/rolling-shutter/medley/testsetup"
 	"github.com/shutter-network/rolling-shutter/rolling-shutter/shdb"
-	"gotest.tools/assert"
 )
 
 func TestProcessBlockSuccess(t *testing.T) {