[Bug 1169979] fontconfig cache updating does not work reliably during live image generation

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1169979

--- Comment #12 from Akira TAGOH  ---
(In reply to Adam Williamson (Red Hat) from comment #11)
> Akira: I can at least say that it seems definitely to have changed somehow
> between 20 and 21. I test booted several F20 Final, Alpha and Beta live
> images and none of them displayed the problem.

not really. 2.11.0 also had that issue. it just happened to work for f20
fortunately or unfortunately.