- CreateTask now accepts only mysql_root_password; drop
mysql_admin_password and the paired root/admin validation,
keeping the >=16-char length and alphanumeric-only checks
- deploymentCredentialVars extracts mysql_root_password only,
remaining compatible with legacy root@localhost records
- Both delivery playbooks drop xinfra_admin provisioning and
the mysql_admin_password assertion, creating 'root'@'%'
as the remote admin account instead
Hungerdream