CI error on 4.1 builds?

[Ala Hino]

Getting following error from CI, only on 4.1 branch, CI for same patch on
master succeded:

20:33:26 Start: yum install 20:33:28 ERROR: Command failed: 20:33:28 #
/usr/bin/yum-deprecated --installroot
/var/lib/mock/epel-7-x86_64-11370f2637703a06ca4541539ddee729-1963/root/
--releasever 7 install @buildsys-build autoconf automake dbus-python gdb
git libguestfs-tools-c m2crypto make mom openvswitch ovirt-imageio-common
policycoreutils-python PyYAML python-blivet python-coverage python-dateutil
python-decorator python-devel python-inotify python-ioprocess python-mock
python-magic python-netaddr python-pthreading python-setuptools python-six
python-requests rpm-build sanlock-python sudo yum yum-utils
--setopt=tsflags=nocontexts ... 20:33:28 failure: repodata/repomd.xml from
centos-ovirt40-release-x86_64: [Errno 256] No more mirrors to try. 20:33:28
http://mirror.centos.org/centos/7/virt/x86_64/ovirt-4.0/repodata/repomd.xml:
[Errno 14] HTTP Error 404 - Not Found

Link to build:
http://jenkins.ovirt.org/job/vdsm_4.1_check-patch-fc24-x86_64/892/
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