K 10
svn:author
V 5
sephe
K 8
svn:date
V 27
2016-05-23T05:11:38.555711Z
K 7
svn:log
V 219
hyperv: Move guest id setup to early place

And
- Rework the guest id composition.
- Nuke useless saved guest_id.

MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D6430

END