Re: [libvirt PATCH 00/33] ci: Unify the GitLab CI jobs with local executions && adopt lcitool container executions

Technically a v2 of: https://listman.redhat.com/archives/libvir-list/2023-February/237552.html However, the approach here is slightly different and what that series said about migration to lcitool container executions as a replacement for ci/Makefile is actually done here. One of the core problems of the above pointed out in review was that more Shell logic was introduced including CLI parsing, conditional executions, etc. which we fought hard to get rid of in the past. I reworked the Shell functions quite a bit and dropped whatever extra Shell logic the original series added. Obviously we can't get rid of Shell completely because of .gitlab-ci.yml and so I merely extracted the recipes into functions which are then sourced as ci/build.sh and executed. Now, that on its own would hide the actual commands being run in the GitLab job log, so before any command is actually executed, it is formatted with a color sequence so we don't miss that information as that would be a regression to the status quo. Lastly, this series then takes the effort inside the ci/build.sh script and basically mirrors whatever GitLab would do to run a job inside a local container which is executed by lcitool (yes, we already have that capability). Please give this a try and I'm already looking forward to comments as I'd like to expand this effort to local VM executions running the TCK integration tests, so this series is quite important in that regard.