fix review problems

config_center/apollo/factory.go

@@ -18,10 +18,13 @@ limitations under the License.
 package apollo
 
 import (
-	"github.com/apache/dubbo-go/config_center/parser"
 	"sync"
 )
 
+import (
+	"github.com/apache/dubbo-go/config_center/parser"
+)
+
 import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/common/extension"

config_center/apollo/impl_test.go

@@ -26,6 +26,10 @@ import (
 	"testing"
 )
 
+import (
+	"github.com/stretchr/testify/assert"
+)
+
 import (
 	"github.com/apache/dubbo-go/common"
 	"github.com/apache/dubbo-go/config"
@@ -34,10 +38,6 @@ import (
 	"github.com/apache/dubbo-go/remoting"
 )
 
-import (
-	"github.com/stretchr/testify/assert"
-)
-
 const (
 	mockAppId     = "testApplication_yang"
 	mockCluster   = "dev"

config_center/apollo/listener.go

@@ -18,11 +18,11 @@ limitations under the License.
 package apollo
 
 import (
-	"github.com/apache/dubbo-go/config_center"
+	"github.com/zouyx/agollo"
 )
 
 import (
-	"github.com/zouyx/agollo"
+	"github.com/apache/dubbo-go/config_center"
 )
 
 type apolloListener struct {