Description of problem:
rhcs deployment fails on osd deployment, when running ansible-playbook -i hosts.yml site-docker.yml after configuring ceph-ansible according to the RHCS 3 container guide dated 2018-11-06

Version-Release number of selected component (if applicable):
rhcs-3.1
ceph-anisble-3.1.10 from downstream repository.
rhel-7.6

How reproducible:
100%

Steps to Reproduce:
1. Spin up 3 rhel-7.6 minimal instances with at least one osd disk.
2. Install ceph-ansible.
3. Follow the above mentioned documentation.
4. Run the playbook: ansible-playbook -i hosts.yml site-docker.yml

Actual results:
This result is from the ceph-ansible-3.2 playbook.
2018-12-03 00:08:43,379 p=28549 u=cephadmin |  TASK [ceph-osd : use ceph-volume to create bluestore osds] *********************************************************
2018-12-03 00:08:43,379 p=28549 u=cephadmin |  Monday 03 December 2018  00:08:43 +0000 (0:00:00.086)       0:08:00.784 *******
2018-12-03 00:08:49,605 p=28549 u=cephadmin |  failed: [satv-rheltest01] (item={u'data_vg': u'ceph_vg_sdc', u'data': u'ceph_lv_sdc'}) => {"changed": false, "failed": true, "item": {"data": "ceph_lv_sdc", "data_vg": "ceph_vg_sdc"}, "msg": "Could not decode json output:  stdout: /dev/sda2\";\"\";\"CeZ2Pn-QOOv-72tw-HlVr-5MTc-JAKi-f8dxpr\";\"rhel\n stdout: /dev/sdb\";\"\";\"iEqNzZ-p5jz-GtAR-9pA4-2nf7-1kqR-vFYlxC\";\"ceph_vg_nvme_b\n stdout: /dev/sdc\";\"\";\"XcdhJo-h9VA-Hgqw-B7yH-EUSp-Hdpz-2un7fW\";\"ceph_vg_sdc\n stdout: /dev/sdd\";\"\";\"v64kkf-M6Xe-g2Ou-QeeK-2nMK-1PD8-SreewW\";\"ceph_vg_sdd\n stdout: /dev/sde\";\"\";\"wI6Ay7-aU5W-0uFl-KOzF-Nk0O-7J1r-aNM12M\";\"ceph_vg_sde\n stderr: Operation prohibited while global/metadata_read_only is set.\n stderr: Recovery of standalone physical volumes failed.\n stderr: Cannot process standalone physical volumes\n stderr: Operation prohibited while global/metadata_read_only is set.\n stderr: Recovery of standalone physical volumes failed.\n stderr: Cannot process standalone physical volumes\n stderr: Operation prohibited while global/metadata_read_only is set.\n stderr: Recovery of standalone physical volumes failed.\n stderr: Cannot process standalone physical volumes\n{}\n from the command ['docker', 'run', '--rm', '--privileged', '--net=host', '-v', '/run/lock/lvm:/run/lock/lvm:z', '-v', '/dev:/dev', '-v', '/etc/ceph:/etc/ceph:z', '-v', '/run/lvm/lvmetad.socket:/run/lvm/lvmetad.socket', '-v', '/var/lib/ceph/:/var/lib/ceph/:z', '-v', '/var/log/ceph/:/var/log/ceph/:z', '--entrypoint=ceph-volume', 'registry.access.redhat.com/rhceph/rhceph-3-rhel7:latest', '--cluster', 'ceph', 'lvm', 'list', 'ceph_vg_sdc/ceph_lv_sdc', '--format=json']", "rc": 1}
2018-12-03 00:08:49,609 p=28549 u=cephadmin |  PLAY RECAP *********************************************************


Expected results:
deployed ceph cluster with 1 osd.

Additional info:
I have shared the playbook for 2 weeks: https://cloud.sa.fo/s/88QCLpabt6YsWni

the *3.1.10 files in groupvars are the ones I used in the ceph-anisble-3.1.10 playbook. (I trimmed the disk count down to 1 when i tried cpeh-anisble-3.2)