Not check safe

[hexylena]

00:00:55 TASK [galaxyproject.nginx : Make nginx -V output a single line] ****************
00:00:55 fatal: [stats.galaxyproject.eu]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'dict object' has no attribute 'stderr'\n\nThe error appears to have been in '/home/centos/workspace/usegalaxy-eu/playbooks/stats/roles/galaxyproject.nginx/tasks/main.yml': line 18, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: Make nginx -V output a single line\n  ^ here\n"}

[natefoo]

Fixed by #6.