test: Send initial HTTP request to start up the server

k6/performance-tests/generate-github-actions.mjs

@@ -88,6 +88,8 @@ jobs:
     steps:
       - name: Check out
         uses: actions/checkout@v2
+      - name: Send an HTTP request to get the start up the server
+        run: curl 'https://test.visualize.admin.ch/api/graphql' -X 'POST' -H 'Content-Type: application/json' -d '{"operationName":"DataCubeObservations","variables":{"locale":"en","sourceType":"sparql","sourceUrl":"https://lindas.admin.ch/query","cubeFilter":{"iri":"https://energy.ld.admin.ch/sfoe/bfe_ogd84_einmalverguetung_fuer_photovoltaikanlagen/9","filters":{"https://energy.ld.admin.ch/sfoe/bfe_ogd84_einmalverguetung_fuer_photovoltaikanlagen/Kanton":{"type":"single","value":"https://ld.admin.ch/canton/1"}}}},"query":"query DataCubeObservations($sourceType: String!, $sourceUrl: String!, $locale: String!, $cubeFilter: DataCubeObservationFilter!) {\n  dataCubeObservations(\n    sourceType: $sourceType\n    sourceUrl: $sourceUrl\n    locale: $locale\n    cubeFilter: $cubeFilter\n  )\n}\n"}'
       - name: Run k6
         uses: addnab/docker-run-action@v3
         with: