[SPARK-16229][SQL] Drop Empty Table After CREATE TABLE AS SELECT fails

#### What changes were proposed in this pull request?
In `CREATE TABLE AS SELECT`, if the `SELECT` query failed, the table should not exist. For example,

```SQL
CREATE TABLE tab
STORED AS TEXTFILE
SELECT 1 AS a, (SELECT a FROM (SELECT 1 AS a UNION ALL SELECT 2 AS a) t) AS b
```
The above query failed as expected but an empty table `t` is created.

This PR is to drop the created table when hitting any non-fatal exception.

#### How was this patch tested?
Added a test case to verify the behavior

Author: gatorsmile <gatorsmile@gmail.com>

Closes #13926 from gatorsmile/dropTableAfterException.