New type of scratch directory - SHM scratch

New type of scratch directory - SHM scratch

From now onwards it is possible to choose a new type of scratch, a SHM scratch. this scratch directory is intended for jobs needing speedy read/write operations. SHM scratch is held only in RAM, therefore all data are nonpersistent and disappear as the job ends or fails. You can read more about HSM scratches and theire usage on  https://wiki.metacentrum.cz/wiki/Scratch_storage

With best regards,
MetaCentrum