* Images added to clusterctl object like Providers
So that repository and tag for one or all of the cert-manager
components can be overriden using patch/replacement
clusterctl Documentation for Image Override:
https://cluster-api.sigs.k8s.io/clusterctl/configuration.html#image-overrides
Change-Id: Id9de8d1967e49aeb3293f6802e51d66d598333ae
Closes: #350