Merge pull request puppetlabs#94 from puppetlabs-operations/wheezy_7_0_default_version

Update postgres_default_version to 9.1 for debian 7.0

Author: cprice404

lib/facter/postgres_default_version.rb

@@ -14,7 +14,7 @@ def get_debian_postgres_version
     # TODO: add more debian versions or better logic here
     when /^6\./
       "8.4"
-    when /^wheezy/
+    when /^wheezy/, /^7\./
       "9.1"
     else
       nil