Bring states.yml from l10n_au

The states.yml present in this repo had a different format which doesn't
work with the current seeds.rb that we brought from ofn-install.

db/default/spree/states.yml

@@ -1,41 +1,33 @@
-#Australia
-states_101:
-  name: Tasmania
+---
+- name: Tasmania
   country_id: "12"
   id: "101"
   abbr: Tas
-states_102:
-  name: Victoria
+- name: Victoria
   country_id: "12"
   id: "102"
   abbr: Vic
-states_103:
-  name: New South Wales
+- name: New South Wales
   country_id: "12"
   id: "103"
   abbr: NSW
-states_104:
-  name: ACT
+- name: ACT
   country_id: "12"
   id: "104"
   abbr: ACT
-states_105:
-  name: Queensland
+- name: Queensland
   country_id: "12"
   id: "105"
   abbr: QLD
-states_106:
-  name: South Australia
+- name: South Australia
   country_id: "12"
   id: "106"
   abbr: SA
-states_107:
-  name: Northern Territory
+- name: Northern Territory
   country_id: "12"
   id: "107"
   abbr: NT
-states_108:
-  name: Western Australia
+- name: Western Australia
   country_id: "12"
   id: "108"
-  abbr: WA
+  abbr: WA