fix checkstyle error.

spring-cloud-starter-tencent-polaris-router/src/test/java/com/tencent/cloud/polaris/router/resttemplate/RouterLabelRestTemplateInterceptorTest.java

@@ -36,8 +36,8 @@ import com.tencent.cloud.common.metadata.MetadataContextHolder;
 import com.tencent.cloud.common.metadata.StaticMetadataManager;
 import com.tencent.cloud.common.util.ApplicationContextAwareUtils;
 import com.tencent.cloud.common.util.JacksonUtils;
-import com.tencent.cloud.polaris.context.config.PolarisContextProperties;
 import com.tencent.cloud.common.util.expresstion.SpringWebExpressionLabelUtils;
+import com.tencent.cloud.polaris.context.config.PolarisContextProperties;
 import com.tencent.cloud.polaris.router.RouterRuleLabelResolver;
 import com.tencent.cloud.polaris.router.spi.SpringWebRouterLabelResolver;
 import org.assertj.core.api.Assertions;