Add dep on python-catkin-pkg.
Add dep on python-catkin-pkg.

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