don't always need to configure a ca-bundle if always using externally trusted registries
if using a mixture of trusted/self-signed upstream repos it can get a bit messy creating a ca-bundle containing required CA certs.
if ca_certificate_bundle not set in the operator use the containers default bundle.
if caCertificateBundle set on MirrorRegistry replace the bundle
don't always need to configure a ca-bundle if always using externally trusted registries
if using a mixture of trusted/self-signed upstream repos it can get a bit messy creating a ca-bundle containing required CA certs.
if ca_certificate_bundle not set in the operator use the containers default bundle.
if caCertificateBundle set on MirrorRegistry replace the bundle