Skip shipping cmctl for v1.15.0-alpha.0 and above

[maelvls]

We removed cmctl from the ./cmd/ctl in the main repository and moved it in the repository https://github.com/cert-manager/cmctl.

I propose to add some logic that will skip the binaries for ./cmd/ctl.

I'm not sure how this will play out for the startupapicheck container used in the Helm chart since the Helm chart currently uses a single version for all containers. We need to figure this out before this PR is merged! All is well since the startupapicheck binary still belongs to the cert-manager project and will still be pushed.

Manual testing while releasing 1.15.0-alpha.0

First, I had to point to my branch (rg = ripgrep):

rg _RELEASE_REPO_REF --files-with-matches \
  | xargs perl -pi -e 's/_RELEASE_REPO_REF:.*/_RELEASE_REPO_REF: "skip-cmctl-older-versions"/g'

Then:

go run ./cmd/cmrel publish --release-name v1.15.0-alpha.0

It passed: https://console.cloud.google.com/cloud-build/builds;region=global/a34b853b-bfe7-4af6-b649-d9a14af851da;tab=detail?project=cert-manager-release

Then, I tested --nomock:

go run ./cmd/cmrel publish --release-name v1.15.0-alpha.0 --nomock

It also passed: https://console.cloud.google.com/cloud-build/builds/afd44d68-cc93-470c-ac2b-e862b6071017?project=1021342095237

[inteon]

Awesome work! I think this might be the last piece in the "move cmctl to a different repo" puzzle.
Thank you for making this work!
/approve
/lgtm

[jetstack-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: inteon

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [inteon]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment