modernize HTCondor calls

[belforte]

Stop using what HTCondor deprecated over the years before they remove it.

Also take advantage of new bindings to simplify wherever possible.

• replace usage of deprecated classad.parseOld #8285
• stop using AuthenticatedSubprocess. Fix #8277 #8331
• replace HTCondorUtils.quote/unquote with classad.(un)quote #8332
• use a Submit object, not a classAd (dagAd) as argument to schedd.submit #8336
  • tasks with numCores>1 stays idle when using submit Object #8456
• avoid resultAds argument in schedd.submit  #8333
• replace schedd.xquery with schedd.query #8447
• avoid passing "bytes" to HTCondor when it expects strings #8450
• remove calls to htcondor inside REST code #8338
• remove HTCondorUtils #8339
• use new format for periodic remove reason #8342
• cleanup TaskType names #8488
• refactor crab resubmit #6270

[belforte]

My branch https://github.com/belforte/CRABServer/tree/modernize_HTC currently has fixes for the above up to "remove calls to HTC inside REST". But I want to cleanup further.

I also still need to test (and likely put code in for):

• extraJDL
• acceleratorparams
• dealing with user-insreted extra spaces in extraJDL

[belforte]

There's some more cleanup to be done, in particular I want to avoid using ROOT as task type since it is a "special" classAd and I already suffered enough of the ambiguity. As ToddM wrote "it happens to be magical"
But I could not think of a good name yet to replace in current list of TaskType values: "ROOT PROCESSING TAIL"
Should also rename TaskType to CRAB_DagType since those are condor jobs in scheduler universe which run the various dagmans, ROOT is always there, the others are for automatic splitting. But I need to fully understand automatic splitting machinery first.

moved to new issue: #8488

[belforte]

refactoring crab resubmit will not be "immediate". And is not directly related. Let's close this in the meanwhile