Drop Puppet 3.2 support

This patch could be reverted later, but currently Travis does not pass
rspec tests with Puppet 3.2.

Minimum release expected is now Puppet 3.6.

.travis.yml

@@ -5,7 +5,6 @@ rvm:
   - 2.0.0
 env:
   matrix:
-    - PUPPET_GEM_VERSION="~> 3.2.0"
     - PUPPET_GEM_VERSION="~> 3.6.0"
     - PUPPET_GEM_VERSION="~> 3.7.0"
 notifications:

metadata.json

@@ -14,7 +14,7 @@
     {"operatingsystem": "RedHat"}
   ],
   "requirements": [
-    {"name": "pe","version_requirement": "3.2.x"},
+    {"name": "pe","version_requirement": "3.6.x"},
     {"name": "puppet","version_requirement": "3.x"}
   ],
   "description": "Puppet module that pulls together all the individual components of Openstack, resulting is a complete and functional stack",