Similarly to Staging, implement containerized builds for the Production jenkins pipeline.

The recipe is pretty similar, but the effort is noticeably smaller:

1. (MR) Add a new job for triggering build_deploy.sh to build on stable
2. (MR) Add dedicated deployment targets for prod'/preview + prod'/stable, in our SaaS-deployment config
3. (RHCLOUD-34270) Re-route the CDN to point at the new deployment. This is done by filing a ticket to RH Cloud, and can be reversed in case we run into issues and need an escape-hatch..