do not consider cob_command_gui in upstream workspace

Author: fmessmer

.travis.yml

@@ -21,7 +21,7 @@ env:
     - VERBOSE_TESTS=false
   matrix:
     - ROS_DISTRO=melodic
-    - ROS_DISTRO=noetic UPSTREAM_WORKSPACE=.travis.rosinstall.noetic
+    - ROS_DISTRO=noetic UPSTREAM_WORKSPACE='.travis.rosinstall.noetic -cob_command_tools/cob_command_gui -cob_command_tools/cob_command_tools'
 install:
   - git clone --quiet --depth 1 https://github.com/fmessmer/industrial_ci.git .industrial_ci -b master_pylint
 script: