[stable-1] Fix docker tests (#1398)

* Adjust version_added, re-place tests. (#34)

* Template docker test containers.

* Forgot to adjust test.

tests/integration/targets/docker_stack_info/tasks/test_stack_info.yml

@@ -31,8 +31,8 @@
         - 'output.results | type_debug == "list"'
         - 'output.results | length == 0'
 
-  - name: Copy compose files
-    copy:
+  - name: Template compose files
+    template:
       src: "{{ item }}"
       dest: "{{ output_dir }}/"
     with_items:

tests/integration/targets/docker_stack_info/templates/stack_compose_base.yml

@@ -1,5 +1,5 @@
 version: '3'
 services:
     busybox:
-        image: busybox:latest
+        image: "{{ docker_test_image_busybox }}:latest"
         command: sleep 3600

tests/integration/targets/docker_stack_info/vars/main.yml

@@ -2,7 +2,7 @@ stack_compose_base:
     version: '3'
     services:
         busybox:
-            image: busybox:latest
+            image: "{{ docker_test_image_busybox }}:latest"
             command: sleep 3600
 
 stack_compose_overrides: