Treat Errored appservers the same as ones with ConfigurationFailed when determining if an instance is shut down
This fixes a small bug in OCIM where instances with only terminated appservers will still show up in the OCIM instance menu if there are any "Errored" appservers associated with the instance.
A simple way to test this is to make it live on OCIM and verify that the Edraak instance stops showing up on the left menu.