Linux ci jobs no use environment variables instead of positional parameters

CI/gitlab-ci/linux-template-test-job.yml

@@ -6,12 +6,18 @@
 
 test-{{BUILDTYPE}}-{{COMPILER}}-{{LANGUAGE}}-{{QT_VERSION}}:
   stage: test
-  script: "CI/ci-linux-test.sh {{COMPILER}} {{LANGUAGE}} {{BUILDTYPE}} {{QT_VERSION}}"
+  script: "CI/ci-linux-test.sh"
   #image: graphics.rwth-aachen.de:4567/docker/docker/docker-openmesh-container
   tags:
     - Linux
     - stretch
     - MultiThreads
+  variables:
+    COMPILER: "{{COMPILER}}"
+    LANGUAGE: "{{LANGUAGE}}"
+    BUILD_TYPE: "{{BUILDTYPE}}"
+    QTVERSION: "{{QT_VERSION}}"
+    IWYU: "no"
   dependencies: [build-{{BUILDTYPE}}-{{COMPILER}}-{{LANGUAGE}}-{{QT_VERSION}}]
   needs: [build-{{BUILDTYPE}}-{{COMPILER}}-{{LANGUAGE}}-{{QT_VERSION}}]
   artifacts: