Append nginx service user to group - do not overwrite existing relations
Merge pull request #4 in ISAR/ansible-linuxdash from ~KUSCH/ansible-linuxdash:hotfix/append-user to next

* commit '23ef21862fdbfa2d3e21f43708e0374de2b45071':
  Append nginx service user to group - do not overwrite existing relations
ansible-linuxdash 0.1.3