add an answers file that creates a swap partition

examples/answers-swap.yaml

@@ -0,0 +1,40 @@
+Welcome:
+  lang: en_US
+Keyboard:
+  layout: us
+Installpath:
+  path: ubuntu
+Network:
+  accept-default: yes
+Proxy:
+  proxy: ""
+Mirror:
+  mirror: "http://us.archive.ubuntu.com"
+Filesystem:
+  manual:
+    - obj: disk-index-0
+      action: PARTITION
+      data:
+        size: 1G
+    - obj: disk-index-0
+      action: PARTITION
+      data:
+        size: 1G
+        fstype: swap
+    - action: done
+Identity:
+  realname: Ubuntu
+  username: ubuntu
+  hostname: ubuntu-server
+  # ubuntu
+  password: '$6$wdAcoXrU039hKYPd$508Qvbe7ObUnxoj15DRCkzC3qO7edjH0VV7BPNRDYK4QR8ofJaEEF2heacn0QgD.f8pO8SNp83XNdWG6tocBM1'
+  ssh-import-id: lp:mwhudson
+SnapList:
+  snaps:
+    hello:
+      channel: stable
+      is_classic: false
+InstallProgress:
+  reboot: yes
+
+