Once your custom CA certificate is added to the cluster via ConfigMap, the
Cluster Network Operator merges the user-provided and system CA certificates
into a single bundle and injects the merged bundle into the Operator requesting
the trust bundle injection.
Operators request this injection by creating an empty ConfigMap with the
The Operator mounts this ConfigMap into the container’s local trust store.
Adding a trusted CA certificate is only needed if the certificate is not
included in the Red Hat Enterprise Linux CoreOS (RHCOS) trust bundle.