Include tripleo_ceph_workdir role on rgw variables override

This change includes the ceph_workdir prepare role to make
sure the ceph_rgw_config_overrides variable is set in the
same block where the task which builds the global overrides
executes.

Co-Authored-By: Giulio Fidente <gfidente@redhat.com>
Change-Id: I68690e87e678b6ad31fce37cc352083251083927
Closes-Bug: 1879938
(cherry picked from commit a9ab369898)

deployment/ceph-ansible/ceph-rgw.yaml

@@ -143,6 +143,10 @@ outputs:
                       - radosgw_frontend_ssl_certificate: '/etc/pki/tls/certs/ceph_rgw.pem'
                     - {get_attr: [CephRgwAnsibleVars, value, vars]}
                   ceph_rgw_config_overrides: {get_attr: [CephRgwConfigOverrides, value, vars]}
+              - name: create ceph-ansible working directory
+                include_role:
+                  name: tripleo-ceph-work-dir
+                  tasks_from: prepare
               - name: generate ceph-ansible group vars rgws
                 copy:
                   dest: "{{playbook_dir}}/ceph-ansible/group_vars/rgws.yml"