issue #590: fix test for <2.8 Ansibles.

tests/ansible/lib/modules/custom_python_uses_distro.py

@@ -2,12 +2,20 @@
 # issue #590: I am an Ansible new-style Python module that tries to use
 # ansible.module_utils.distro.
 
+import ansible
 from ansible.module_utils.basic import AnsibleModule
+
+if ansible.__version__ > '2.8':
     from ansible.module_utils import distro
+else:
+    distro = None
 
 def main():
     module = AnsibleModule(argument_spec={})
+    if ansible.__version__ > '2.8':
         module.exit_json(info=distro.info())
+    else:
+        module.exit_json(info={'id': None})
 
 if __name__ == '__main__':
     main()