rosinstall: Adding a necessary runtime dependency

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>

recipes-devtools/python/python-rosinstall_0.6.21.bb

@@ -12,6 +12,7 @@ S = "${WORKDIR}/${SRCNAME}-${PV}"
 
 # install_requires=['vcstools', 'pyyaml'],
 DEPENDS += "python-vcstools python-pyyaml"
+RDEPENDS_${PN} = "python-vcstools"
 
 inherit setuptools