Add replacements for composite/infra

[mattmceuen]

As it stands today:

• the cert-manager function doesn't specify any /replacements
• the tigera-operator function has /replacements, but they're not getting used anywhere afaict

In order to ensure proper replacement of container image refs, this story is to implement the following:

1. add the three images used in the cert-manager function to airshipctl-base-catalogues/airshipctl-versions.yaml.
2. there is a single cert-manager entry in that catalogue already, which looks to be unneeded and should be removed. The existing field is referenced by a mapping rule in function/clusterctl/replacements, which is no longer relevant and should be removed.
3. add a cert-manager/v1.1.0/replacements kustomization, which allows replacement of cert-manager container images from the versions catalogue
4. create a composite/infra/replacements entrypoint which aggregates the cert-manager replacements and the tigera-operator replacements
5. anywhere the composite/infra is referenced, in airshipctl or treasuremap, make sure the new composite/infra/replacements is pulled in as appropriate. At the type level, that probably means referencing the new replacements in initinfra/replacements. If there is a test-site site-level reference to composite/infra in airshipctl, then the replacements should be applied in that same kustomization.yaml.

[sirajyasin]

I can start working on this issue. can someone assign this to me