Description of problem:
Show incorrect msg if vm migration failed

Version-Release number of selected component (if applicable):
OCP4.3 + CNV2.2

How reproducible:
always

Steps to Reproduce:
1.create and start vm
2.migrate vm from rhcos to rhel worker
source node:host-172-16-0-23
target node:cnv-executor-zpeng43-rhel-worker-0

3.migrate failed due to CPU issue, check vm status in UI
failed msg:
VirtualMachineInstance migration uid b52efbf0-a356-4e2c-b62f-8f97dce06bb2 failed. reason:Live migration failed virError(Code=9, Domain=31, Message='operation failed: guest CPU doesn't match specification: missing features: umip,arch-capabilities')


Actual results:
migrate failed, but in UI the node is change to
:cnv-executor-zpeng43-rhel-worker-0

the vm status is "Stopping" for long time

i can use console to connect vm right now because the vm is running on source
node. 

Expected results:
if migration failed, need change node to source and set status to running.


Additional info:
#oc get pods
virt-launcher-testvm-m57xf                                        2/2     Running            0          17m
virt-launcher-testvm-z5zwr                                        0/2     Error              0          16m