Try to fix docker tests (#764)

* Try to limit docker package version if API version is < 1.39.

* Fix error.

* Re-combine to one command.

tests/integration/targets/setup_docker/defaults/main.yml

@@ -7,8 +7,8 @@ docker_packages:
   - docker-ce
 
 docker_pip_extra_packages: []
-docker_pip_packages:
+docker_pip_package: docker
-  - docker
+docker_pip_package_limit: ''
 
 docker_cleanup_packages:
   - docker

tests/integration/targets/setup_docker/handlers/main.yml

@@ -1,7 +1,7 @@
 - name: remove pip packages
   pip:
     state: present
-    name: "{{ docker_pip_packages | union(docker_pip_extra_packages) }}"
+    name: "{{ [docker_pip_package] | union(docker_pip_extra_packages) }}"
   listen: cleanup docker
   when: not docker_skip_cleanup | bool
 

tests/integration/targets/setup_docker/tasks/main.yml

@@ -27,10 +27,21 @@
           paths:
             - "{{ role_path }}/tasks"
 
+    # Detect docker API version
+    - name: Check Docker API version
+      command: "docker version -f {% raw %}'{{(index .Server.Components 0).Details.ApiVersion}}'{% endraw %}"
+      register: docker_api_version_stdout
+      ignore_errors: yes
+
+    - name: Limit docker pypi package version to < 4.3.0
+      set_fact:
+        docker_pip_package_limit: '<4.3.0'
+      when: (docker_api_version_stdout.stdout | default('0.0')) is version('1.39', '<')
+
     - name: Install Python requirements
       pip:
         state: present
-        name: "{{ docker_pip_packages | union(docker_pip_extra_packages) }}"
+        name: "{{ [docker_pip_package ~ docker_pip_package_limit] + docker_pip_extra_packages }}"
         extra_args: "-c {{ remote_constraints }}"
       notify: cleanup docker