Katello 3.5 rhel7, install fails (dependency libkadm5-1.15.1-8.el7.x86_64 Requires: krb5-libs(x86-64) = 1.15.1-8.el7)

[ekohl]

Rubygem-rkerberos currently not installable on EL7.5

As some of you might have noticed, rubygem-rkerberos is currently not installable on EL 7.5, as it depends on an older libkadm5clnt_mit.so.8 that is no longer part of EL 7.5. This is tracked upstream in EPEL BZ #1563125 and there is an update (FEDORA-EPEL-2018-90207015c0) available for testing. We are tracking this in #23241, you can follow the redmine issue for updates. If you are running Foreman and want to upgrade the base OS to EL 7.5, you can either hold off updating libkadm5 (and all th…