Modify "api-boot-sample-alibaba-oss" test code

Author: hengboy

api-boot-samples/api-boot-sample-alibaba-oss/src/test/java/org/minbox/framework/api/boot/sample/ApiBootOssTest.java

@@ -2,8 +2,8 @@
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.minbox.framework.api.boot.plugin.oss.ApiBootOssService;
-import org.minbox.framework.api.boot.plugin.storage.response.ApiBootObjectStorageResponse;
+import org.minbox.framework.api.boot.oss.ApiBootOssService;
+import org.minbox.framework.api.boot.storage.response.ApiBootObjectStorageResponse;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;