WIP: zfs.backup
WIP: zfs.backup

At the point where the command should successfully interrogate the
target system for it's list of snapshots, but this hasn't been tested
yet. Need to work on the vagrant VMs a bit to test.

UCSD-ANF/pyzfsautosnap,UCSD-ANF/pyzfsautosnap,UCSD-ANF/pyzfsautosnap