Workaround for LP#1641568
Workaround for LP#1641568

If a server performs a very slow operations with network devices,
libvirt can raise an exception when destroy a domain, see [1].
However, domain is actually destroyed.

Make a workaround to continue with other domains.

[1] https://bugs.launchpad.net/fuel/+bug/1641568

Change-Id: Id9e259d7038f4f7a4d60e0b200d4e32a545b788d

stackforge/fuel-devops,stackforge/fuel-devops