add runtime import

Author: H-Shay

tests/federation_redaction_test.go

@@ -7,11 +7,13 @@ import (
 	"github.com/matrix-org/gomatrixserverlib"
 	"testing"
 	"time"
+	"github.com/matrix-org/complement/runtime"
 )
 
 // test that a redaction is sent out over federation even if we don't have the original event
 func TestFederationRedactSendsWithoutEvent(t *testing.T) {
     runtime.SkipIf(t, runtime.Dendrite)
+
 	deployment := Deploy(t, b.BlueprintAlice)
 	defer deployment.Destroy(t)