Foreman » Packaging

Refs #29539 - Depend on websockify if needed

Websockify used to be vendored to show a console for some compute
resources:

$ rg -i wsproxy.start -l
    app/models/compute_resources/foreman/model/ovirt.rb
    app/models/compute_resources/foreman/model/vmware.rb
    app/models/compute_resources/foreman/model/libvirt.rb

Now it's using a proper package.