Description of problem:
When trying to list VMs on freshly added RHEV compute resource, one of following errors appear:

"There was an error listing VMs: 500 Internal Server Error"
or
"There was an error listing VMs: undefined method `state' for #<Fog::Compute::Ovirt::Server:0x0000000a5c7ab0>"

There is no additional info in production.log

Version-Release number of selected component (if applicable):
Satellite Version 6.1.3 COMPOSE 6
Red Hat Enterprise Virtualization Manager Version: 3.6.0-0.18.el6

How reproducible:
There always appears an error, it seems to be random of the two errors mentioned.

Steps to Reproduce:
1. Add a rhev (3.6) compute resource
2. Click on Virtual Machines tab
3. One of the errors appears

Actual results:
Can't list VMs, error appears

Expected results:
Can list VMs, list of VMs appears

Additional info:
Sat6 running with updated fog:

ruby193-rubygem-fog-core-1.32.0-1.el7.noarch
ruby193-rubygem-fog-google-0.0.7-1.el7.noarch
ruby193-rubygem-fog-1.32.0-1.el7.noarch
ruby193-rubygem-fog-aws-0.7.2-1.el7.noarch
ruby193-rubygem-fog-json-1.0.0-2.1.el7.noarch
ruby193-rubygem-fog-xml-0.1.2-1.el7.noarch

Also updated is rbovirt:
ruby193-rubygem-rbovirt-0.0.35-1.el7.noarch