[HUDI-3116]Add a new HoodieDropPartitionsTool to let users drop table partitions through a standalone job.

hudi-sync/hudi-hive-sync/src/main/java/org/apache/hudi/hive/HiveSyncTool.java

@@ -109,6 +109,10 @@ public HiveSyncTool(HiveSyncConfig cfg, HiveConf configuration, FileSystem fs) {
     }
   }
 
+  public HoodieHiveClient getHoodieHiveClient() {
+    return this.hoodieHiveClient;
+  }
+
   @Override
   public void syncHoodieTable() {
     try {