Release version 1.2.3

CHANGELOG.md

+## 2015-05-12 - Release 1.2.3
+
+Don't pin beaker
+
 ## 2015-04-27 - Release 1.2.2
 
 Add nodeset ubuntu-12.04-x86_64-openstack

metadata.json

 {
   "name": "camptocamp-postfix",
-  "version": "1.2.2",
+  "version": "1.2.3",
   "author": "Camptocamp",
   "summary": "Camptocamp Postfix Module",
   "license": "Apache-2.0",