"bytes free" => "GB" or "MB" or "KB" free, from heas

From: heasley <heas@shrubbery.net>
To: Stefan Jakob <stefan.jakob@de-cix.net>
Cc: rancid-discuss@shrubbery.net
Subject: Re: [rancid] arrancid (2.3.4) - ignore bytes free in ShowFlash

for XR, it summarized as follows.  does this work for arista?
Add clogin from rancid-2.3.8
Fix power supply status parsing
Add (commented-out) "show tech ribd running"

This is only useful for customers who modify ribd config directly,
which we strongly discourage, so it's commented out by default.
Get rid of a bunch of cruft left over from copying from IOS
Merge branch 'shrubbery'