sysutils/auto-admin: Upgrade to 0.4.8

FreeBSD changes:

Roll auto-add-linproc-mount into auto-install-linux_base
Remove obsolete auto-amd-nfs-setup, auto-kdm3-toggle
Add scripts for installing and updating infininband kernel
Factor auto-install-linux-flash out of desktop-installer

New common scripts:

auto-idrac-passwd
auto-fetch-install-media
auto-install-media-distname
auto-lock-local-pw, auto-unlock-local-pw
auto-root-check
auto-useradd
auto-user-admin