[CentOS] RHSA-2019:1467 not fixed in centos

Fri Jun 21 08:46:05 UTC 2019
isdtor <isdtor at gmail.com>

> Our new build system set up uses mock on CentOS-7 to build CentOS-6 and
> CentOS-7 packages .. python seems to fail with that setup.
According to my notes, mock on C7 is currently broken for C5/C6 builds, but unfortunately I forgot to note the underlying reason ...