Lookup CI setup scripts in a argument provided path

In preparation for migration to the new colcon-ROS2-enabled industrial_ci

See https://github.com/ros-industrial/industrial_ci/pull/361#pullrequestreview-236934549

.gitlab-industrial-ci-kinetic-no-rosinstall.yml

@@ -27,7 +27,7 @@ before_script:
     ROS_DISTRO: kinetic
     ROS_PARALLEL_JOBS: "-j2" # keep this for now, since there seems to be memory limit issues in the ci VM
     DOCKER_IMAGE: "${ARTIFACT_DOCKER_URL}/flexbotics-base-devel"
-    BEFORE_SCRIPT: "bash <(curl -Ls https://git.code.tecnalia.com/tecnalia_robotics-public/gitlab_templates/raw/master/scripts/ci_run_entry_points.sh) $CATKIN_WORKSPACE"
+    BEFORE_SCRIPT: "bash <(curl -Ls https://git.code.tecnalia.com/tecnalia_robotics-public/gitlab_templates/raw/master/scripts/ci_run_entry_points.sh) $$CATKIN_WORKSPACE"
     CATKIN_CONFIG: '--cmake-args -DCMAKE_CXX_FLAGS=-Wno-ignored-attributes -Wno-int-in-bool-context --'
   when: always