Add support for debian
Add support for debian

this makes it possible to use rosdep resolve package
on a debian system, such as raspbian

spaghetti-/rosdep,aymanim/rosdep,wkentaro/rosdep,alessandro-aglietti/rosdep,wkentaro/rosdep,ros-infrastructure/rosdep,allenh1/rosdep,aymanim/rosdep,allenh1/rosdep,georgepar/rosdep,alessandro-aglietti/rosdep,sorki/rosdep,spaghetti-/rosdep,georgepar/rosdep,sorki/rosdep,ros-infrastructure/rosdep