the "administrative user group" changed from admin to sudo, so prefer sudo

We want to use the sudo when it exists and admin as a fallback, but when both
exist we should prefer sudo.

*sigh*
Merge branch 'topic/precise-dpkging' into series/precise

* topic/precise-dpkging:
  the "administrative user group" changed from admin to sudo, so prefer sudo
puppet-git-receiver (1.5.0-1~12.04~ppa2) precise; urgency=low