change owner and group of server.cnf

Hello Samuel,

file '/etc/my.cnf.d/server.cnf' do
  content ini_conf
  owner 'root'
  group 'mysql'
  mode '0640'
  sensitive true
end

We would like to change the owner and group (inverse it) to have owner 'mysql' and group 'root' and the file should be mode '0700'

Please, would you add more flexibility for the resource block.

Thank you