HDFS-10561. test_native_mini_dfs fails by NoClassDefFoundError. (aajisaka)

(cherry picked from commit ff07b108039ecc4e680352f756930673ced42256)

hadoop-hdfs-project/hadoop-hdfs-native-client/pom.xml

@@ -68,6 +68,11 @@ http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <artifactId>mockito-all</artifactId>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>