[PATCH v2 OSSTEST 0/18] Implement for driving libvirt via virsh

[Ian Campbell <Ian.Campbell@citrix.com>]

The following series switches osstest to implement the toolstack via
get_host_method_object()->method rather than toolstack()->{Command}."
method" etc.

This is needed because virsh differs from xm/xl in a few commands.

It also implements partial virsh support (simple lifecycle stuff, but
not e.g. migration yet). Due to the ts-migration-check logic this means
that the libvirt sequence works in so far as it skips/ignores the
migration/save+restore related tests.

I've not kept notes on what I changes since last time (but noone has
really reviewed the v1/RFC anyway ;-)). This time around is more
complete in that it implements shutdown etc and the job completes and
I've actually removed ->{Command} which was just an aspiration last
timearound.

I've tested with:

test-amd64-amd64-libvirt on a xen-unstable flight, which failed due to
http://article.gmane.org/gmane.comp.emulators.xen.devel/224197 and that
set of issues.

test-amd64-amd64-libvirt on a xen-unstable flight with the above patches
added, works.

Since this touches xend code paths I've also tested using a
xen-4.4-testing based flight:

test-amd64-amd64-libvirt
test-amd64-amd64-pv (uses xend)
test-amd64-amd64-xl (uses xl, duh!)

All passed.

The last patch stubs out migration a bit but doesn't actually work and
obviously shouldn't be applied, it's included for reference. Note that
the series still enables useful functionality even without migration
(e.g. start/stop/destroy testing)

Ian.