Update Concat module to latest version

This is to avoid errors such as:
Error: Failed to apply catalog: Could not find dependency
File[/usr/local/bin/concatfragments.sh] for
Exec[concat_/etc/httpd/conf/ports.conf] at
/usr/share/openstack-puppet/modules/concat/manifests/init.pp:175
Merge pull request #82 from gildub/Update/Concat+latest

Update Concat module to latest version