Move auto devops domain from ci/cd settings to cluster settings
Problem to solve
Currently, auto devops domain is configured on project's settings. This is problematic as it prevents users from setting up multiple domains for multiple clusters in an easy, intuitive way.
With multiple group clusters, we cannot set variables like AUTO_DEVOPS_DOMAIN per environment
Because each cluster has a unique ingress IP, each cluster should provide unique base domain configuration.
Move base domain setting to cluster configuration settings.
What does success look like, and how can we measure that?
(If no way to measure success, link to an issue that will implement a way to measure this)