Disable "register-in-foreman" installer option for clones

[lzap]

When new clone starts installer, it will fail to re-register new proxy:

Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[]: Failed to call refresh: Proxy xyz cannot be registered (ApipieBindings::MissingArgumentsError: id): N/A

Declarative puppet will unlikely be able to rename proxy via API (it was designed to only add new ones which will fail), therefore we need to turn this feature off and ask the user to rename the proxy in web UI. Once this is fixed in satellite-clone please make doco change:

Once Satellite web UI is working, visit Capsules, edit the old Capsule and rename both the capsule and URL to:

Name: capsule.example.com
URL: https://capsule.example.com:9090

Make sure the Name and URL are exactly the same.

[lzap]

Please turn this flag off:

    /etc/foreman-installer/scenarios.d/satellite-answers.yaml:    register_in_foreman: true

in order to improve upgrade experience for cloned satellites.