[et-mgmt-tools] Detect System from MAC Address Koan Patch

[Michael DeHaan]

adamwolf at feelslikeburning.com wrote:
> This patch enables a --autodetect-system argument to koan.  It's for use
> with --replace-self.  When --autodetect-system is used, koan gets the
> local mac address, compares it to the listed mac addresses it got from
> xmlrpc information.  If there is a single match, that system is set, and
> the --replace-self process goes on as usual.
>
> The patch is off the 0.5.0 release.
>
> Currently, it grabs the mac address through some parsing of the output of
> ifconfig.  This is non-ideal and is marked as such in the comments.  I was
> pointed to some code that used rhpl, but that would require a new import
> in koan.
>
> Adam Wolf
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I really like this idea for doing re-imaging -- a good use case would be 
for a lot of public terminal setups that do nightly reinstalls, etc -- 
but for
whatever reason didn't want to just use --profile ... or want the 
abstraction capability to change what profile a system is pointed to.

I may tweak this slightly to make the argument duplication checks a bit 
simpler, but otherwise, a good patch.   I'll include this shortly.

Thanks!

--Michael