Fixes #29005 - Make IPv4 optional in proxydns

[ekohl]

No description provided.

[lzap]

Uh which one do I need to patch to test this?

[lzap@box ~]$ locate  manifests/proxydns.pp 
/home/lzap/work/foreman-installer/_build/modules/foreman_proxy/manifests/proxydns.pp
/home/lzap/work/foreman-installer/modules/foreman_proxy/manifests/proxydns.pp
/home/lzap/work/katello-installer/.tmp/librarian/cache/source/git/7fe93406b4426aaf/manifests/proxydns.pp
/home/lzap/work/node-installer/modules/foreman_proxy/manifests/proxydns.pp
/home/lzap/work/puppet-foreman_proxy/manifests/proxydns.pp

[lzap]

Disregard my previous comment, lack of caffeine. I can confirm this works fine.