Comment 1 for bug 1838412

Why is this happening now?

- this job has always used filestore [1]
- as per the logs 010 in the body of the bug bluestore was used anyway
- this job used ceph-ansible 4.0rc12
- 4.0.0rc3 had collocated support [3]
- 4.0.0rc4 does not have collocated support [4]

[1] https://opendev.org/openstack/tripleo-heat-templates/src/branch/master/ci/environments/scenario010-multinode-containers.yaml#L86
[2] http://logs.openstack.org/98/673398/1/check/tripleo-ci-centos-7-scenario010-multinode-oooq-container/8828e0d/logs/undercloud/home/zuul/install_packages.sh.log.txt.gz#_2019-07-30_05_11_11
[3] https://github.com/ceph/ceph-ansible/tree/v4.0.0rc3/roles/ceph-osd/tasks/scenarios
[4] https://github.com/ceph/ceph-ansible/tree/v4.0.0rc4/roles/ceph-osd/tasks/scenarios