docker: Retry osd disk prep to workaround race condition

Fixes: https://github.com/ceph/ceph-ansible/issues/1495

Signed-off-by: David Galloway <dgallowa@redhat.com>

roles/ceph-osd/tasks/docker/start_docker_osd.yml

@@ -41,6 +41,9 @@
     - item.1.get("rc", 0) != 0
     - ceph_osd_docker_prepare_env is defined
     - not osd_containerized_deployment_with_kv
+  # https://github.com/ceph/ceph-ansible/issues/1495
+  retries: 5
+  delay: 3
 
 - name: prepare ceph osd disk with kv_store
   shell: |
@@ -66,6 +69,9 @@
     - item.1.get("rc", 0) != 0
     - ceph_osd_docker_prepare_env is defined
     - osd_containerized_deployment_with_kv
+  # https://github.com/ceph/ceph-ansible/issues/1495
+  retries: 5
+  delay: 3
 
 - name: generate ceph osd docker run script
   become: true