reprepro: switch from common::concatfilepart to concat[1]

[1] https://github.com/camptocamp/puppet-concat
aptcachedir wasn't being set in pbuilderrc so it was being as
/aptcachedir
set system=>true on non human user accounts

This is important to avoid uid/gid conflicts with accounts created
with fixed uids in normal user range.

This patch won't break existing configs because it only influences the
uid generation on new user / group creation and has no impact on existing
resources.
Merge pull request #2 from ckaenzig/set-user-system-param

set system=>true on non human user accounts
update URLs to use debian CDN
don't timeout when building/updating pbuilder templates
replace disfunctionnal sed one-liner by an environment variable
missing dependency
param alignment
Make pbuilder module work with puppetlabs-apt
Merge pull request #3 from mcanevet/pl-apt

Make pbuilder module work with puppetlabs-apt
Lint pbuilder module
Merge pull request #4 from mcanevet/lint

Lint pbuilder module
Merge pull request #2 from camptocamp/master

Resync with camptocamp modifications
Do not call concat::setup anymore
use local $caller_module_name instead of top-scope
Merge pull request #3 from saimonn/master

use local $caller_module_name instead of top-scope
Only source $APTCONFDIR with there's files in there
comment out --allow-unauthenticated as the version of pbuilder from
squeeze doesn't support it