G5k: `allow_classic_ssh` is deprecated
This warning isn't brought back to the user when running EnOSlib
oarsub -I -t allow_classic_ssh
# Warning: allow_classic_ssh job type is not supported anymore, it is now possible to
# Warning: connect directly to nodes with 'ssh' if entirely reserved within a single job
# Set walltime to default (3600 s).
So we'll need to align our job_types soon