[che-dev] Using internal network for che-services back-ends by default

[Oleksandr Andriienko <oandriie@xxxxxxxxxx>]

Hello. We have an issue about using an internal cluster network in the Che services: https://github.com/eclipse/che/issues/17644. Few words about this feature: it should resolve some network issues related to proxy, firewalls and so on, and it should improve Che performance, because internal network requests usually have a better ping than requests to the public hostname url. We implemented this feature for che-operator installer and it's an optional. Users can enable/disable it using Custom Resource org.eclipse.CheCluster.
We prepared pr's with implementation of this feature:

https://github.com/eclipse/che/pull/17945
https://github.com/eclipse/che/pull/18225
https://github.com/eclipse/che-operator/pull/468
https://github.com/eclipse/che-operator/pull/507

In the frame of this issue, we want to discuss if this feature should be enabled/disabled by default. So, if you want, share your opinion, please.