(MODULES-689) Add support for connlimit and connmark
(MODULES-689) connlimit and connmark acceptance tests
Merge pull request #344 from csschwe/add_connection_limit

(MODULES-689) Add support for connlimit and connmark
Pull in stdlib with version at least 3.0.0 to get is_integer function.
Fix support for Fedora Rawhide

On Fedora facter $::operatingsystemrelease can be integer version of Fedora or string Rawhide.