[gitlab-ci] refactor to use except:variables instead of bash if

.gitlab-ci.yml

@@ -32,14 +32,20 @@ mypy:
   script: tox -e mypy
 
 trigger-other-pipelines:
+  except:
+    variables:
+      - $TRIGGERED_FROM_OTHER_PROJECT
   stage: after-tests
   script:
-  - "if [ -z \"${TRIGGERED_FROM_OTHER_PROJECT}\" ]; then curl -X POST -F \"variables[TRIGGERED_FROM_OTHER_PROJECT]=true\" -F token=$CUBICWEB_PIPELINE_TRIGGER_TOKEN -F ref=branch/default https://forge.extranet.logilab.fr/api/v4/projects/385/trigger/pipeline; fi"
+  - curl -X POST -F "variables[TRIGGERED_FROM_OTHER_PROJECT]=true" -F token=$CUBICWEB_PIPELINE_TRIGGER_TOKEN -F ref=branch/default https://forge.extranet.logilab.fr/api/v4/projects/385/trigger/pipeline
 
 trigger-readthedocs:
   only:
     refs:
       - branch/default
+  except:
+    variables:
+      - $TRIGGERED_FROM_OTHER_PROJECT
   stage: after-tests
   script:
-  - "if [ -z \"${TRIGGERED_FROM_OTHER_PROJECT}\" ]; then curl -X POST -d \"token=${READTHEDOCS_TOKEN}\" https://readthedocs.org/api/v2/webhook/yams/109442/; fi"
+  - curl -X POST -d "token=${READTHEDOCS_TOKEN}" https://readthedocs.org/api/v2/webhook/yams/109442/