modify pom.xml2 (#422)

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

tests/milvustest/pom.xml

@@ -138,6 +138,12 @@
             <groupId>org.apache.httpcomponents</groupId>
             <artifactId>httpcore</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.kubernetes</groupId>
+            <artifactId>client-java</artifactId>
+            <version>12.0.0</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
     <build>