Comment 11 for bug 1573502

So, we have merged fix for a detached keystone plugin, for other tests an original check works fine. But we could modify it to be more stable, suggested change will work like this:
for i in 3 4 7 8; do ssh node-$i grep corosync_roles /etc/hiera/plugins/detach-*.yaml -A2 2>/dev/null; done
where numbers are ids for nodes with separated role.
We will cat the content of plugin's yaml file and compare it with other nodes with the same role. With this check we'll avoid hiera unpredictable output