Issue 50454 - Fix Cockpit UI branding
Bug Description: On RHEL we still displayed "389 Directory Server" in
the Cockpit vertical navigation panel instead of
"Red Hat Directory Server".
Fix Description: Instead of using separate files, just do a "sed" replacement
in the specfile to handle the branding
https://pagure.io/389-ds-base/issue/50454
Reviewed by: viktor & mhonek (Thanks!!)