What does this MR do?

Moves 'domain' setting from Auto DevOps to Clusters page

EE MR: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/9373

What are the relevant issue numbers?

Related to #52363 (closed)

Screenshots

Cluster page

On CE

Without ingress	With ingress

On EE

Without ingress	With ingress

Auto DevOps Page

CE & EE

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated via this MR - https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24740
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• [-] Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• [-] Security reports checked/validated by reviewer

Backend To do

• Add domain field to Clusters page
• Change domain text if the Cluster has Ingress installed
• Remove domain from Auto DevOps
• Inject KUBE_INGRESS_HOSTNAME (along with AUTO_DEVOPS_DOMAIN) environment variable if present.
• Migration
• Fix QA https://gitlab.com/gitlab-org/gitlab-ce/-/jobs/152347852