Bug 1119419 - openshift.sh support for CONF_JBOSSEAP_BETA_REPO

This is a proposed "dev" only setting for testing EAP betas.
I see you're adding both `CONF_JBOSSEAP_BETA_REPO` and `CONF_JBOSSEAP_REPO` here; I'm guessing the latter is a remnant from development of this PR and should be deleted.