tripleo-tox-molecule centos/7/storage/x86_64/ceph-octopus/repodata/repomd.xml: [Errno 14] HTTP Error 404

    TASK [tripleo-repos : Update all installed packages after new repos are setup] ***
fatal: [centos7]: FAILED! => changed=false
  msg: |-
    http://mirror.centos.org/centos/7/storage/x86_64/ceph-octopus/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
    Trying other mirror.
    To address this issue please refer to the below wiki article

    https://wiki.centos.org/yum-errors

    If above article doesn't help to resolve this issue please use https://bugs.centos.org/.

     One of the configured repositories failed (tripleo-centos-ceph-octopus),
     and yum doesn't have enough cached data to continue. At this point the only
     safe thing yum can do is fail. There are a few ways to work "fix" this:

         1. Contact the upstream for the repository and get them to fix the problem.

         2. Reconfigure the baseurl/etc. for the repository, to point to a working
            upstream. This is most often useful if you are using a newer
            distribution release than is supported by the repository (and the
            packages for the previous distribution release still work).

         3. Run the command with the repository temporarily disabled
                yum --disablerepo=tripleo-centos-ceph-octopus ...

         4. Disable the repository permanently, so yum won't use it by default. Yum
            will then just ignore the repository until you permanently enable it
            again or use --enablerepo for temporary usage:

                yum-config-manager --disable tripleo-centos-ceph-octopus
            or
                subscription-manager repos --disable=tripleo-centos-ceph-octopus

    PLAY RECAP *********************************************************************
    centos7 : ok=7 changed=6 unreachable=0 failed=1 skipped=4 rescued=0 ignored=0

         5. Configure the failing repository to be skipped, if it is unavailable.
            Note that yum will try to contact the repo. when it runs most commands,
            so will have to try and fail each time (and thus. yum will be be much
            slower). If it is a very temporary problem though, this is often a nice
            compromise:

                yum-config-manager --save --setopt=tripleo-centos-ceph-octopus.skip_if_unavailable=true

    failure: repodata/repomd.xml from tripleo-centos-ceph-octopus: [Errno 256] No more mirrors to try.
    http://mirror.centos.org/centos/7/storage/x86_64/ceph-octopus/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
  rc: 1
  results: []

https://f3b9509bf703d6407c73-eb4966d6f73a1195abf0bef83b33defe.ssl.cf1.rackcdn.com/764120/2/gate/tripleo-tox-molecule/e68c518/tox/reports.html

This has failed twice in the gate.
A patch to tripleo-repos is probably required.