Add support for forward/reverse DNS range split

- Allow for explicit reverse RFC1918 lookups with unbound_reverse_zones
- Add tests, similar to NSD ones
- Wait for network to be online before starting (fixes AETHER-1041)
- Multiplatform support

Change-Id: I385aec6f766b45a9db595d2f8af5ed8fe0dde2ca
diff --git a/molecule/default/prepare.yml b/molecule/default/prepare.yml
index cfec10c..8011b9d 100644
--- a/molecule/default/prepare.yml
+++ b/molecule/default/prepare.yml
@@ -6,12 +6,13 @@
 
 - name: Prepare for unbound by installing nsd for testing
   hosts: all
-  roles:
-    - nsd
 
-  tasks:
+  pre_tasks:
     - name: Add dnsutils so dig works in tests
       apt:
         name: "dnsutils"
         state: "present"
         update_cache: true
+
+  roles:
+    - nsd