I tested this patch on Fedora 21 and, after removing Kimchi, some files were still left on the system.

I installed the RPM, started the Kimchi server, stopped the server and then I removed the RPM. Here's the final output of my tests:

[kimchi@localhost ~]$ ls /etc/kimchi/

distros.d kimchi-cert.pem kimchi.conf kimchi-key.pem nginx.conf.in nginx_kimchi.conf

[kimchi@localhost ~]$ sudo yum remove kimchi

[...]

[kimchi@localhost ~]$ ls /etc/kimchi/

kimchi-cert.pem kimchi-key.pem

[kimchi@localhost ~]$