mysql USER and HOST should be quoted for drop query

[neubi4]

USER and HOST should be quoted to avoid errors in drop user statement.

Query result unquoted:

+------------------------------------------+
| users                                    |
+------------------------------------------+
| root@localhost, root@127.0.0.1, root@::1 |
+------------------------------------------+

Raised this error:

TASK [devsec.hardening.mysql_hardening : ensure that there are no users without password or authentication_string] *************************************************************************
fatal: [host]: FAILED! => changed=false
  msg: 'Cannot execute SQL ''DROP USER root@localhost, root@127.0.0.1, root@::1'' args [None]: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ''::1'' at line 1")'

Query result Quoted:

+------------------------------------------------------+
| users                                                |
+------------------------------------------------------+
| 'root'@'localhost', 'root'@'127.0.0.1', 'root'@'::1' |
+------------------------------------------------------+

[rndmh3ro]

Thank you! I wonder why this error didn't happen in my tests..