Make API server bind address configurable

[szvincze]

• Which image of the operator are you using? ghcr.io/zalando/postgres-operator:v1.14.0 and older
• Where do you run it - cloud or metal? Kubernetes or OpenShift? Bare Metal K8s
• Are you running Postgres Operator in production? yes
• Type of issue? Feature request

time="2025-03-21T16:48:14Z" level=info msg="listening on :8080" pkg=apiserver

It is a requirement in our deployments to be able to bind the services to a certain interface instead of 0.0.0.0 or [::]. For security reasons it is a good practice to use localhost (127.0.0.1) as bind address. In the current implementation of postgres-operator the port of the API server is configurable but the address is not. It would be needed to make the address configurable too.