Rpm upgrade documentation is missing.
For minor version upgrade there should be nothing more difficult than
Meanwhile major upgrade is a bit less trivial. User should simultanously upgrade two repositories - rh-sso and jb-eap ones.
For upgrade from rh-sso-7.1 to rh-sso-7.2 it's necessary to enable these repositories:
If user doesn't turn on both repositories, rh-sso will most likely fail to start, because rh-sso-7.2 depends on eap-7.1