fix patrole-multinode-member non-voting gate by skip_because a bug

the bug is due to a nova api that is allowed with a system scoped
token and patrole does not support them at this time.

https://storyboard.openstack.org/#!/story/2008051
Closes-Bug:2008051

Change-Id: I6963fdff199fca342620ab15948ce2c1d29c2c7a
1 file changed