overwrite the yum repository configuration

[goneri]

This to be able to address problem like this:

+ /usr/bin/dnf update -y
CentOS Stream 8 - AppStream                     6.7 MB/s |  21 MB     00:03
CentOS Stream 8 - BaseOS                        2.9 MB/s |  20 MB     00:07
CentOS Stream 8 - Extras                        120 kB/s |  18 kB     00:00
CentOS Stream 8 - PowerTools                    3.9 MB/s | 4.4 MB     00:01
Extra Packages for Enterprise Linux Modular 8 - 960 kB/s | 1.0 MB     00:01
Error:
 Problem: package centos-stream-repos-8-4.el8.noarch requires centos-gpg-keys = 1:8-4.el8, but none of the providers can be installed
  - cannot install both centos-gpg-keys-1:8-5.el8.noarch and centos-gpg-keys-1:8-4.el8.noarch
  - cannot install the best update candidate for package centos-stream-repos-8-4.el8.noarch
  - cannot install the best update candidate for package centos-gpg-keys-1:8-4.el8.noarch
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

[softwarefactory-project-zuul]

Build succeeded.

• ansible-tox-linters : SUCCESS in 6m 11s