Add commit notes URL to scheduled qa job slack notification

.gitlab/ci/notifications.gitlab-ci.yml

@@ -10,8 +10,10 @@ schedule:package-and-qa:notify-success:
   extends:
     - .only-canonical-schedules
     - .notify
+  before_script:
+    - export COMMIT_NOTES_URL="https://$CI_SERVER_HOST/$CI_PROJECT_PATH/commit/$CI_COMMIT_SHA#notes-list"
   script:
-    - 'scripts/notify-slack qa-master ":tada: Scheduled QA against master passed! :tada: See $CI_PIPELINE_URL." ci_passing'
+    - 'scripts/notify-slack qa-master ":tada: Scheduled QA against master passed! :tada: See $CI_PIPELINE_URL. For downstream pipelines, see $COMMIT_NOTES_URL" ci_passing'
   needs: ["schedule:package-and-qa"]
   when: on_success
 
@@ -19,7 +21,9 @@ schedule:package-and-qa:notify-failure:
   extends:
     - .only-canonical-schedules
     - .notify
+  before_script:
+    - export COMMIT_NOTES_URL="https://$CI_SERVER_HOST/$CI_PROJECT_PATH/commit/$CI_COMMIT_SHA#notes-list"
   script:
-    - 'scripts/notify-slack qa-master ":skull_and_crossbones: Scheduled QA against master failed! :skull_and_crossbones: See $CI_PIPELINE_URL." ci_failing'
+    - 'scripts/notify-slack qa-master ":skull_and_crossbones: Scheduled QA against master failed! :skull_and_crossbones: See $CI_PIPELINE_URL. For downstream pipelines, see $COMMIT_NOTES_URL" ci_failing'
   needs: ["schedule:package-and-qa"]
   when: on_failure