Update instructions to deploy Che on OpenShift
Update instructions to deploy Che on OpenShift

Add a new role to che service account. That's needed after https://github.com/eclipse/che/commit/2fc5373524faa2c5ed93ae1d7ddefc48608f4ac3
sunix/rh-che,sunix/rh-che,sunix/rh-che,sunix/rh-che