roles/common/tasks/main.yml: Use `default' filter instead of circumlocution.

diff --git a/roles/common/tasks/main.yml b/roles/common/tasks/main.yml
index a264715..5d80497 100644 (file)
--- a/roles/common/tasks/main.yml
+++ b/roles/common/tasks/main.yml
@@ -40,7 +40,7 @@
 - name: install NTP configuration files
   tags: [ntp, ntp-client]
   copy: src=ntp-client/ntp.conf dest=/etc
-  when: server is not defined or 'ntp' not in server
+  when: ('ntp') not in server |default([])
   notify: restart ntpd
 
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