Push Jobs Server product key is now `push-jobs-server`
Push Jobs Server product key is now `push-jobs-server`

See the following commit for details:
https://github.com/chef/mixlib-install/commit/c364f87ec2fc0cc82c00d57c3be7edae3d133fbc

opscode-cookbooks/delivery-cluster,chef-cookbooks/delivery-cluster,chef-cookbooks/delivery-cluster,opscode-cookbooks/delivery-cluster