Hello,

Here is again a change for Borg to allow to give the --umask option on each borg invocation.

Please fetch branch borg-umask at http://git.ni.fr.eu.org/nicolas/propellor.git.

As a side change, I use {now} instead of a call to $(date …), I think it's more idiomatic for borg usage.

Tested with stretch and buster.

merged thanks for the contribution. --Joey