Fix vanilla lxplus submitter in case of files fatched through xrootd
Job submission with vanilla lxplus was failing for files fetched via xrootd with error like e.g.:
OSError: XRootD error: [FATAL] Redirect limit has been reached ...
This happens when the job can't access the proxy properly. In order to do this we apply two corrections:
- in the condor file generator, we add getenv = True
- in run_analysis we export X509_USER_PROXY
References: CERN Batch in https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookXrootdService