catkin: Update version to groovy-devel

The catkin framework need some modification to support cross compiling
packages via yocto. When we want to upstream patches we need to provide
patches against the current groovy-devel branch. Use this branch as base
for our work to simplify the tests and to unify the developing process
of catkin.

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>