use this stmt to show tablets storage format in be, if verbose is set,
will show detail message of tablet storage format.
e.g.
```
MySQL [(none)]> admin show tablet storage format;
+-----------+---------+---------+
| BackendId | V1Count | V2Count |
+-----------+---------+---------+
| 10002 | 0 | 2867 |
+-----------+---------+---------+
1 row in set (0.003 sec)
MySQL [test_query_qa]> admin show tablet storage format verbose;
+-----------+----------+---------------+
| BackendId | TabletId | StorageFormat |
+-----------+----------+---------------+
| 10002 | 39227 | V2 |
| 10002 | 39221 | V2 |
| 10002 | 39215 | V2 |
| 10002 | 39199 | V2 |
+-----------+----------+---------------+
4 rows in set (0.034 sec)
```
add storage format infomation to show full table statment.
```
MySQL [test_query_qa]> show full tables;
+-------------------------+------------+---------------+
| Tables_in_test_query_qa | Table_type | StorageFormat |
+-------------------------+------------+---------------+
| bigtable | BASE TABLE | V2 |
| test_dup | BASE TABLE | V2 |
| test | BASE TABLE | V2 |
| baseall | BASE TABLE | V2 |
| test_string | BASE TABLE | V2 |
+-------------------------+------------+---------------+
5 rows in set (0.002 sec)
```
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