openshift.ks: Don't update DOMAIN_SUFFIX

The DOMAIN_SUFFIX setting in /etc/openshift/console.conf no longer exists,
so don't bother trying to update it.

This commit fixes bug 1056897.
Merge pull request #276 from Miciah/openshift.ks-dont-update-DOMAIN_SUFFIX

openshift.ks: Don't update DOMAIN_SUFFIX
bug 1056897 marked VERIFIED