1. Proposed title of this feature request
Feedback on ACS service availability

2. What is the nature and description of the request?
Get information about ACS readiness through an API call, either to OCP, or to one or multiple ACS services.

3. Why does the customer need this? (List the business requirements here)
RHTAP deploys RHACS, including in its CI. We can check that everything is running fine by running `oc rollout status "deployment" --namespace="${NAMESPACE}" --watch --timeout=10s --selector="app=$APP,app.kubernetes.io/instance=stackrox-central-services"` with APP taking the values "central" "central-db" "scanner" "scanner-db".

However, some services are not ready to be used after being deployed, until post-deployment activities are completed. Such an example is the download of the vulnerability data for scannerV4, which is long running operation.

The goal of this request is to get confirmation, ideally via a single API call, that RHACS is deployed, configured, and ready to serve any call.

4. List any affected packages or components.
RHACS