fix import

cluster/router/condition/router_rule_test.go

@@ -18,13 +18,17 @@
 package condition
 
 import (
-	"github.com/apache/dubbo-go/common"
 	"testing"
 )
+
 import (
 	"github.com/stretchr/testify/assert"
 )
 
+import (
+	"github.com/apache/dubbo-go/common"
+)
+
 func TestGetRule(t *testing.T) {
 	testyml := `
 scope: application