Explicitly set file mode for apt_repository module sind that has changed in Ansible 2.1

tasks/main.yml

@@ -24,6 +24,7 @@
     apt_repository:
       repo="deb https://deb.nodesource.com/node_4.x {{ ansible_distribution_release }} main"
       state=present
+      mode=644
 
   - name: "nodeJS | Install core packages"
     apt: