Release version 1.2.7

CHANGELOG.md

+## 2015-05-26 - Release 1.2.7
+
+add utopic & vivid nodesets
+
 ## 2015-05-25 - Release 1.2.6
 
 Don't allow failure on Puppet 4

metadata.json

 {
   "name": "camptocamp-postfix",
-  "version": "1.2.6",
+  "version": "1.2.7",
   "author": "Camptocamp",
   "summary": "Camptocamp Postfix Module",
   "license": "Apache-2.0",