Fix continuous integration

  - add a target benchmark that installs robot related packages,
  - use this target when running tests as defined in .gitlab-ci.yml.

.gitlab-ci.yml

@@ -9,7 +9,7 @@ variables:
     script:
       - export INSTALL_DOCUMENTATION=OFF
       - cp -r /clean_workspace $DEVEL_HPP_DIR
-      - /auto-install-hpp.sh --branch ${CI_COMMIT_REF_NAME}
+      - /auto-install-hpp.sh --branch ${CI_COMMIT_REF_NAME} --target benchmark
     artifacts:
       paths:
         - workspace

doc/Makefile

@@ -187,6 +187,9 @@ endif
 all: hpp_tutorial.install hpp-gepetto-viewer.install
 	${MAKE} hpp-doc.install
 
+benchmark: all hpp_romeo.install hpp_universal_robot.install \
+	hpp-baxter.install hpp-environments.install
+
 # source $DEVEL_HPP_DIR/install/setup.bash before installing hrp2.
 hrp2: test-hpp.install