Use CMake to build os-autoinst

[Martchus]

I suppose this is actually necessary because os-autoinst-devel will now only pull the dependencies for the CMake build.

[Martchus]

The tests fail because cmake is not found. That is because it is still using the old Docker image. I needed to submit the Docker change first without adapting the CI job. That's annoying because it means merging the Docker change blindly.

I could also add another PR which installs os-autoinst-devel only in addition to the current dependency list. Then I would change the CI job and afterwards reduce the dependencies in the Dockerfile. The last step would still be risky but at least no force-merging would be required.

[codecov]

Codecov Report

Merging #3283 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3283   +/-   ##
=======================================
  Coverage   91.49%   91.50%           
=======================================
  Files         215      215           
  Lines       13062    13062           
=======================================
+ Hits        11951    11952    +1     
+ Misses       1111     1110    -1     

Impacted Files	Coverage Δ
lib/OpenQA/WebAPI/Plugin/Helpers.pm	95.91% <0.00%> (+0.40%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d88f852...7c9ea5b. Read the comment docs.

[Martchus]

It works after rebasing against the latest ci-packages.txt. The CI log for caching shows that CMake is used and the fullstack tests are still passing.