Update the preflight and postrelease docs for starting a new release
branch and after publishing that release for the first time to update
the GitHub Action the scheduled building of the buildboxes.
Remove `.drone.yml` and `dronegen` which generates it from the repo,
disabling drone on master. Remove references to drone in docs.
The remaining piplines in `.drone.yml` were the tag build and promote
pipelines which now run on GitHub Actions, the push build pipelines that
are currently of limited value and will be re-done differently with a
little thought, and the `teleport-docker-cron-ecr` pipeline which no
longer works as of v15 due to the removal of the legacy OCI images (the
teleport-labs stuff that the pipeline builds is to be removed shortly
too).
From `docs/postrelease.md`:
- [x] Update `branchMajorVersion` const in Dronegen `/dronegen/container_images.go`, then run `make dronegen`
- [x] Update `CURRENT_VERSION_ROOT`, `PREVIOUS_VERSION_ONE_ROOT`, and `PREVIOUS_VERSION_TWO_ROOT` variables in `.drone.yml`, then run `make dronegen`
- Example: https://github.com/gravitational/teleport/pull/4602
- [x] Create PR to update default Teleport image referenced in docker/teleport-quickstart.yml
- Example: https://github.com/gravitational/teleport/pull/4655
- [x] Create PR to update default Teleport image referenced in docker/teleport-lab.yml
* Remove CodeQL Scanning for release branches
In RFD 114 (PR #32233) we setup mirroring for the Teleport release branches to the `teleport-sec-scan` repos. There are several advantages to moving the CodeQL scanning to these repos:
* It removes the manual process described in `preflight` to update the codeql scanning branch
* It solves the issue of alerts being repeatedly opened and closed as they are found on release branches and only fixed in master, for example: https://github.com/gravitational/teleport/security/code-scanning/560
As such CodeQL has already been configured on these repos and the initial findings triaged: https://github.com/gravitational/teleport-sec-scan-1/blob/master/.github/workflows/codeql-mirror.yml
* codeql: Comment relaese branch scanning
Cam Hutchison