catkin: adding runtime dependency

recipes-ros/catkin/catkin_git.bb

@@ -4,6 +4,7 @@ LICENSE = "BSD"
 LIC_FILES_CHKSUM = "file://package.xml;beginline=7;endline=7;md5=d566ef916e9dedc494f5f793a6690ba5"
 
 DEPENDS = "cmake python-empy python-catkin-pkg"
+RDEPENDS_${PN} = "python-catkin-pkg"
 
 SRC_URI = "git://github.com/ros/${BPN}.git \
            file://0001-CATKIN_WORKSPACES-Don-t-require-.catkin-file.patch \