/dbname in hostname

[justintime]

Given the following resource:

  mysql::db { 'dbname':
    user     => 'dbuser',
    password => 'dbpass',
    host     => '%',
    grant => ['all'],
    charset => 'utf8',
  }

You will end up with '%/dbname' in the Host column of the mysql.user table, when it should just be a '%'.

This pull request is embarassing, and shows just how much of a Ruby newb I am. While it technically works, it violates DRY in every way. Please, please, please show me how to pull this regex out into a method. Note that the same regex is used in lib/puppet/provider/database_grant/mysql.rb