Check for database presence in a nice way, rather than
dropping the database.
Thankfully there was a syntax error in the previous
version, so no database would have been dropped.
There was no check for whether it succeeded or not.
Adding the following Test Coverage for RedHat and Debian OS:
- Use mysql_db module to create, delete databases using different encoding.
- Backup/Restore databases using different file format: sql, gz and bz2.
- Create and delete databases using different user privilege.
- Assert database creation, deleting and content using system commands.
