Merge branch 'INFRA-4806' into 'master'

Remove repos file installed by the centos-release rpm

See merge request !8

templates/ansible_callback.template.j2

@@ -2,6 +2,7 @@
 
 MAC_ADDR=`ip a |grep -B1 $(hostname -I)|grep ether |awk '{ print $2 }'`
 
+rm -fr /etc/yum.repos.d/CentOS-*.repo
 yum makecache
 yum install -y python3