docker: make ceph docker osd script path

Since distro will not allow /usr/share to be writable (e.g: atomic) so
we let the operator decide where to put that script.

Signed-off-by: Sébastien Han <seb@redhat.com>

group_vars/osds.yml.sample

@@ -193,4 +193,5 @@ dummy:
 #ceph_osd_docker_devices: "{{ devices }}"
 #ceph_docker_on_openstack: false
 #ceph_config_keys: [] # DON'T TOUCH ME
+#ceph_osd_docker_run_script_path: "/usr/share"
 

roles/ceph-osd/defaults/main.yml

@@ -185,3 +185,4 @@ ceph_osd_docker_extra_env: -e CLUSTER={{ cluster }} -e CEPH_DAEMON=OSD_CEPH_DISK
 ceph_osd_docker_devices: "{{ devices }}"
 ceph_docker_on_openstack: false
 ceph_config_keys: [] # DON'T TOUCH ME
+ceph_osd_docker_run_script_path: "/usr/share"

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

@@ -71,7 +71,7 @@
   become: true
   template:
     src: "{{ role_path }}/templates/ceph-osd-run.sh.j2"
-    dest: /usr/share/ceph-osd-run.sh
+    dest: "{{ ceph_osd_docker_run_script_path }}/ceph-osd-run.sh"
     owner: "root"
     group: "root"
     mode: "0744"

roles/ceph-osd/templates/ceph-osd.service.j2

@@ -7,7 +7,7 @@ After=docker.service
 EnvironmentFile=-/etc/environment
 ExecStartPre=-/usr/bin/docker stop {{ ansible_hostname }}-osd-dev%i
 ExecStartPre=-/usr/bin/docker rm -f {{ ansible_hostname }}-osd-dev%i
-ExecStart=/usr/share/ceph-osd-run.sh %i
+ExecStart={{ ceph_osd_docker_run_script_path }}/ceph-osd-run.sh %i
 ExecStop=-/usr/bin/docker stop {{ ansible_hostname }}-osd-dev%i
 Restart=always
 RestartSec=10s

tests/functional/centos/7/docker-cluster/group_vars/all

@@ -21,3 +21,4 @@ ceph_osd_docker_devices: "{{ devices }}"
 devices:
   - /dev/sda
   - /dev/sdb
+ceph_osd_docker_run_script_path: /var/tmp