Improve status reporting of e2e-test ci job.

Author: purple4reina

ci/input_files/build.yaml.tpl

@@ -261,3 +261,12 @@ e2e-test:
       - "publish-layer-sandbox ({{ .name }}-{{ .arch }}): [{{ $e2e_region }}]"
     {{- end }}
     {{- end }}
+
+e2e-test-status:
+  stage: test
+  image: registry.ddbuild.io/images/docker:20.10-py3
+  tags: ["arch:amd64"]
+  script:
+    - git clone -b rey.abolofia/status-check --single-branch https://gitlab-ci-token:${CI_JOB_TOKEN}@gitlab.ddbuild.io/DataDog/serverless-e2e-tests
+    - cd ./serverless-e2e-tests
+    - ./scripts/check_e2e_status.sh