modify alterindex test (#1167)

Signed-off-by: yongpengli-z <yongpeng.li@zilliz.com>

tests/milvustestv2/pom.xml

@@ -73,7 +73,7 @@
         <dependency>
             <groupId>io.milvus</groupId>
             <artifactId>milvus-sdk-java</artifactId>
-            <version>2.4.0</version>
+            <version>2.4.7</version>
         </dependency>
         <dependency>
             <groupId>com.google.protobuf</groupId>

tests/milvustestv2/src/test/java/com/zilliz/milvustestv2/index/AlterIndexTest.java

@@ -51,7 +51,7 @@ public class AlterIndexTest extends BaseTest {
                 .collectionName(collectionName)
                 .indexName(strings.get(0)).build());
         System.out.println(describeIndexResp);
-        Assert.assertTrue(describeIndexResp.getIndexDescriptions().get(0).getExtraParams().get(Constant.MMAP_ENABLED).equalsIgnoreCase("true"));
+        Assert.assertTrue(describeIndexResp.getIndexDescriptions().get(0).getProperties().get(Constant.MMAP_ENABLED).equalsIgnoreCase("true"));
 
     }