Prevent stopping xenconsoled before shutting down all the VMs
Prevent stopping xenconsoled before shutting down all the VMs

Otherwise still running VMs will hang, consuming 100% CPU.

QubesOS/qubes-issues#1425

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