Change in vdsm[master]: virt: drop unused guests_gateway_ip

[Code Review]

From Dan Kenigsberg :

Dan Kenigsberg has submitted this change and it was merged.

Change subject: virt: drop unused guests_gateway_ip
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virt: drop unused guests_gateway_ip

guests_gateway_ip is a prehistoric configurable, that has been
completely replaced by display network.

If it is ever used, it renderes a VM non-migratible (as the graphics
address on one host should not exist on the destination host, too).

This patch drops something that should have been removed many years ago,
with the introduction of libvirtvm.py.

Change-Id: Ia2e08388ffab439cb8985d4f220a410b4f6b6c90
Signed-off-by: Dan Kenigsberg 
---
M lib/vdsm/config.py.in
M lib/vdsm/virt/vmdevices/graphics.py
2 files changed, 1 insertion(+), 3 deletions(-)

Approvals:
  Jenkins CI: Passed CI tests
  Dan Kenigsberg: Verified
  Francesco Romani: Looks good to me, approved