Use standard Vcs fields for perl package.
Certainty: certain
Overridden-Lintian-Issues:
 libblah-perl source: team/pkg-perl/vcs/no-git Vcs-Bzr
 libblah-perl source: team/pkg-perl/vcs/no-team-url Vcs-Git 
 libblah-perl source: team/pkg-perl/vcs/no-team-url Vcs-Browser 
