Merge branch 'disable-mac-build' into 'master'

temporarily disable macOS builds (until the build server is back)

See merge request jct-vc/HM!22

.gitlab-ci.yml

@@ -14,10 +14,10 @@ stages:
          - $CI_PROJECT_URL == 'https://vcgit.hhi.fraunhofer.de/jct-vc/HM'
          - $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == 'master'
 
-build_macos:
-   extends: .build_template
-   tags:
-      - macos
+#build_macos:
+#   extends: .build_template
+#   tags:
+#      - macos
 
 build_ubuntu1604:
    extends: .build_template