SOFTWARE-6232: htcondor2 bindings

[mwestphall]

No description provided.

[brianhlin]

I'd prefer leaving the osg-pilot-container probe alone until we have a plan. Also, we should bump the condor requirement on gratia-probe condor subpackages so that they pull in a version with htcondor2 available. I think that's 24.0.0 at a minimum but it's not clear from the upstream release notes when exactly they declared it ready.

[brianhlin]

It looks like we need to import the htcondor2/classad2 python libraries into the tests

[brianhlin]

@mwestphall : Jason had a good idea in that we could try importing the new libraries and fallback to the old ones if that doesn't work. That way we can 1) get rid of the version requirement and 2) ship this in 24-main

[mwestphall]

@brianhlin good idea. I've updated the package proper to use try-importing, I don't think it will be necessary for the tests since they are now just pulling in the htcondor2 python packages.

[brianhlin]

LGTM