[Users] Certificates and PKI seem to be broken after yum update

[Chris Smith]

I have lost the ability to manage the hosts or VM's using ovirt
engine web interface after performing yum update on the ovirt-engine
host, and on one Fedora 17 host.  The data center is offline, and I
can't place the hosts into maintenance mode.  I don't think that there
are any actions I can perform in the web interface at all.