If you have SELinux enabled, using Kerberos (KRB) keys instead of RSA keys can cause remote execution jobs to fail.
Adam, is the MR requested here all that is needed for this bug? If so, it got merged some time ago and we can close this out.
No, the requested MR was to "make the options for it show up in the installer". This BZ is now about "when I use the options, installer fails on SELinux enabled machines".