TASK [geerlingguy.varnish : Ensure Varnish services are started enabled on startup (Xenial specific)] ***
[DEPRECATION WARNING]: evaluating [u'varnish'] as a bare variable, this
behaviour will go away and you might need to add |bool to the expression in the
future. Also see CONDITIONAL_BARE_VARS configuration toggle.. This feature
will be removed in version 2.12. Deprecation warnings can be disabled by
setting deprecation_warnings=False in ansible.cfg.
skipping: [localhost] => (item=varnish)
See example: https://travis-ci.org/geerlingguy/drupal-vm/jobs/652146023#L2202