auto-admin: Upgrade to 0.6.0

New scripts for octet/hex conversions, iDRAC config and timezone detection
Add ZFS support to auto-pxe-installer-setup
More flexible network settings in auto-pxe-node-discover
Fix egregious bugs in NFS setup scripts
More robust auto-gpu-setup
Improved UI for auto-pkgsrc-setup
More robust auto-update-system