docker_swarm_service: Add working_dir option (#52425)

* Add working_dir option

* Check local mounts var to align with other checks

* Add changelog fragment

* Add trailing comma

test/integration/targets/docker_swarm_service/tasks/tests/options.yml

@@ -2524,6 +2524,43 @@
       - user_2 is not changed
       - user_3 is changed
 
+####################################################################
+## working_dir #####################################################
+####################################################################
+
+- name: working_dir
+  docker_swarm_service:
+    name: "{{ service_name }}"
+    image: alpine:3.8
+    working_dir: /tmp
+  register: working_dir_1
+
+- name: working_dir (idempotency)
+  docker_swarm_service:
+    name: "{{ service_name }}"
+    image: alpine:3.8
+    working_dir: /tmp
+  register: working_dir_2
+
+- name: working_dir (change)
+  docker_swarm_service:
+    name: "{{ service_name }}"
+    image: alpine:3.8
+    working_dir: /
+  register: working_dir_3
+
+- name: cleanup
+  docker_swarm_service:
+    name: "{{ service_name }}"
+    state: absent
+  diff: no
+
+- assert:
+    that:
+    - working_dir_1 is changed
+    - working_dir_2 is not changed
+    - working_dir_3 is changed
+
 ####################################################################
 ####################################################################
 ####################################################################

test/integration/targets/docker_swarm_service/vars/main.yml

@@ -44,3 +44,4 @@ service_expected_output:
   update_monitor: null
   update_order: null
   update_parallelism: 1
+  working_dir: null