Copy/move variables from common to commonauth

defaults/main.yml

+tunnel_user_name: 'systunnel'
+jailusers: []
+
+initial_password: 'a4q7nsYju.N4I'
+# created with:
+# python -c 'import crypt; print crypt.crypt("My First Password", "a4$6dZ8$FngnTn$x")'
+# or:
+# openssl passwd -salt <salt> -1 <plaintext>