Merge pull request #84 from rackn/init-system-fix

Test for a systemd service that should be up.

roles/kubernetes/preinstall/tasks/main.yml

@@ -17,7 +17,7 @@
 
 - name: "Identify init system"
   shell: >
-    $(pgrep systemd > /dev/null && systemctl status > /dev/null);
+    $(pgrep systemd > /dev/null && systemctl status network > /dev/null);
     if [ $? -eq 0 ] ; then
       echo systemd;
     else