Prohibit an empty string for $limit_zone
Prohibit an empty string for $limit_zone

Co-Authored-By: Tim Meusel <5ee0edb9e2229c0838f1959779f1949031de0123@bastelfreak.de>
jfryman/puppet-nginx,jfryman/puppet-nginx,voxpupuli/puppet-nginx,raphink/puppet-nginx,voxpupuli/puppet-nginx