Feature Overview (aka. Goal Summary)  

In controlled deployments in restricted network environments, support for configuring service endpoints is required. With IBM Cloud, [support](https://docs.openshift.com/container-platform/4.17/installing/installing_ibm_cloud/installing-ibm-cloud-restricted.html#access-to-ibm-service-endpoints_installing-ibm-cloud-restricted) has already been provided to specify desired service endpoints at install time. It is also desirable to be able to change the service endpoint configuration, post-install. This Feature will extend existing support and allow post-install changes to the service endpoint configuration.

Goals (aka. expected user outcomes)

Provide an official path for IBM deployed clusters to update the infrastructure object with service endpoint override(s) that will propagate to all dependent components without further user intervention.

Requirements (aka. Acceptance Criteria):

As an OpenShift cluster administrator, I want to update my cluster's current service endpoint configuration to point to new service endpoints so that I can comply with administrative requirements to direct component traffic through regional or private endpoints.
 
 

Anyone reviewing this Feature needs to know which deployment configurations that the Feature will apply to (or not) once it's been completed.  Describe specific needs (or indicate N/A) for each of the following deployment scenarios. For specific configurations that are out-of-scope for a given release, ensure you provide the OCPSTRAT (for the future to be supported configuration) as well.

Background

IBM Cloud requires this enhancement for their control plane replatforming efforts. OpenShift IPI for IBM Cloud will be used to deploy a cluster with critical responsibility in our managed control plane. During the genesis phase of region bring up, existing service endpoints will be used while new regional service endpoints are brought up. Once the new regional service endpoints are available, the aforementioned cluster's service endpoint configuration will need to be updated.