Follow up on CNN deprecation done in the update to python 3.10. about gatk

[gokalpcelik]

If we will get rid of those anyway can't we just provide a yml file with an unsupported yet minimal conda environment just to run old CNN tools (Neither we make it mandatory on the docker image nor we force people to install it). We should keep in mind that some of those libraries are pulled from the default channel which still raises questionable ethics for some.

[droazen]

Yes, the plan is to distribute the old environment as just a yml file that can be optionally activated -- provided that we can set up part of the test suite to run under the old environment, which is the next task.