issue #633: skip test on older Ansibles.

Author: dw

tests/ansible/integration/connection/reset_become.yml

@@ -5,6 +5,12 @@
   become: true
   gather_facts: false
   tasks:
+  - debug: msg="reset_become.yml skipped on Ansible<2.5.6"
+    when: ansible_version.full < '2.5.6'
+
+  - meta: end_play
+    when: ansible_version.full < '2.5.6'
+
   - name: save pid of the become acct
     custom_python_detect_environment:
     register: become_acct