Caught unknown libvirt errors on getting runtime VM info
Caught unknown libvirt errors on getting runtime VM info

In some cases libvirt doesn't report error code at all. This probably
happens in some stage of domain startup/shutdown. Threat this the same
as domain not running.

Fixes QubesOS/qubes-issues#1537

QubesOS/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,marmarek/qubes-core-admin,woju/qubes-core-admin,QubesOS/qubes-core-admin