Push system-tests results to test optimization (#275)

* Push system-tests results to test optimization

* Use existing key

Co-authored-by: Charles de Beauchesne <charles.debeauchesne@datadoghq.com>

* Env fix

* Move to global secret

---------

Co-authored-by: Charles de Beauchesne <charles.debeauchesne@datadoghq.com>

Author: nccatoni

.github/workflows/dev.yml

@@ -185,7 +185,8 @@ jobs:
   system-tests:
     needs: build-system-tests-artifact
     uses: DataDog/system-tests/.github/workflows/system-tests.yml@main
-    secrets: inherit
+    secrets:
+      TEST_OPTIMIZATION_API_KEY: ${{ secrets.DD_CI_VIS_API_KEY }}
     permissions:
       contents: read
       packages: write
@@ -194,3 +195,4 @@ jobs:
       binaries_artifact: system_tests_binaries
       parametric_job_count: 8  # dedicated parameter to speed up parametric job
       scenarios: PARAMETRIC
+      push_to_test_optimization: true