Merge pull request #197 from shenyunlong/fix_unstable_sec_test

[Test] fix unstable secondary partition test cases

Author: WeiXinChan

src/test/java/com/alipay/oceanbase/hbase/secondary/OHTableSecondaryPartTTLTest.java

@@ -33,6 +33,7 @@ public static void before() throws Exception {
 
     @AfterClass
     public static void finish() throws Exception {
+        dropTables(tableNames, group2tableNames);
         closeDistributedExecute();
     }