Unable to install RH-SSO from RPM on RHEL 8 - unable to install jna

Issue

• Getting the following error:

  # dnf groupinstall rh-sso7
  Updating Subscription Management repositories.
  Last metadata expiration check: 0:21:08 ago on Tue 25 Jun 2019 11:01:44 AM CEST.
  Error:
   Problem: cannot install the best candidate for the job
    - nothing provides jna needed by rh-sso7-keycloak-server-4.8.8-1.Final_redhat_00001.1.el8sso.noarch
  (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)