Add service ports, ssh port, SNAT rule in nftables

ref: INF-138

Change-Id: I94a80467b30416a288b4a2ac6325427123df4d7d
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
index 2bf9948..52d6c8f 100644
--- a/molecule/default/molecule.yml
+++ b/molecule/default/molecule.yml
@@ -7,19 +7,15 @@
 dependency:
   name: galaxy
 driver:
-  name: docker
+  name: vagrant
 platforms:
-  - name: "ubuntu-16.04-priv"
-    image: "quay.io/paulfantom/molecule-systemd:ubuntu-16.04"
-    privileged: true
-    volumes:
-      - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
-  - name: "ubuntu-18.04-priv"
-    image: "quay.io/paulfantom/molecule-systemd:ubuntu-18.04"
-    privileged: true
-    volumes:
-      - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
+  - name: instance
+    box: generic/ubuntu1804
+    memory: 512
+    cpus: 1
 provisioner:
   name: ansible
+  playbooks:
+    prepare: prepare.yml
 verifier:
   name: ansible