Add the ability to create groups

Change-Id: Ia3afd1751bf822a7efd706aa029dbed079e7c026
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
index d20d847..3338c00 100644
--- a/molecule/default/converge.yml
+++ b/molecule/default/converge.yml
@@ -18,6 +18,7 @@
         ssh_key: false
         extra_groups:
           - "users"
+          - "extragroup"
       - username: ghopper
         fullname: "Grace Hopper"
         bcrypt: "$2b$16$k2u18U6LQCBHa.KarY5Kb.RP7Q/A4HsKBdTd7j57pBm.9aPwdKpQe"
@@ -26,6 +27,8 @@
         sudoer: true
     users_sudoers:
       - "%users ALL=(ghopper) NOPASSWD: ALL"
+    users_groups:
+      - "extragroup"
   tasks:
     - name: "Include users"
       include_role: