(TK-473) Update clj-parent to 2.4.1
(TK-473) Update clj-parent to 2.4.1

This contains an update to Jetty to stop reporting the server version in
headers.

puppetlabs/puppetserver,puppetlabs/puppet-server,puppetlabs/puppet-server,puppetlabs/puppet-server,puppetlabs/puppetserver,puppetlabs/puppetserver,puppetlabs/puppetserver