Update mysql.md: variables values should be quoted, otherwise you get an "variables config should be a hash of key value pairs" error
Update mysql.md: variables values should be quoted, otherwise you get an "variables config should be a hash of key value pairs" error

mmkassem/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq