remove calls to htcondor inside REST code

[belforte]

we do not use them since almost ever. Nor want to.
If we ever wanted to talk to HTCondor from client, better do it via the TW.

• remove htc calls from HTCondorDataWorkflow.py

• make sure that's the only place

• make the change backward compatible with current client

• also remove htcondor from CRABRest container

• Also remove possibility to do this in crab status https://github.com/dmwm/CRABClient/blob/0a267d70365e02621f2187bf09ccad791ac2e60d/src/python/CRABClient/Commands/status.py#L85-L88 At first sight that's the only API which would trigger a call to HTCondor inside the REST

  • do not use REST to make HTC calls CRABClient#5316

[mapellidario]

Does this issue supersede #7782 ? Can we close that issue in favor of this one?

[belforte]

oopss... Thanks Dario, I did not rememeber that we have that already. It i exacly same thing.
Let's merge in this one. so adding

• remove htcondor from CRABRest container

I do guess it is not worth to worry about old spec files anymore, will be enough to do for the Pypi part