Add job to finalize statuses

Signed-off-by: Maksym Pavlenko <pavlenko.maksym@gmail.com>

.github/workflows/ci.yml

@@ -139,3 +139,20 @@ jobs:
         run: |
           sudo -E PATH=$PATH make integration
         working-directory: src/github.com/containerd/containerd
+
+  # Currently Github actions UI supports no masks to mark matrix jobs as required to pass status checks.
+  # This means that every time version of Go, containerd, or OS is changed, a corresponding job should
+  # be added to the list of required checks. Which is not very convenient.
+  # To workaround this, a special job is added to report statuses of all other jobs, with fixed title.
+  # So it needs to be added to the list of required checks only once.
+  #
+  # See https://github.com/orgs/community/discussions/26822
+  results:
+    name: Report required job statuses
+    runs-on: ubuntu-latest
+    # List job dependencies which are required to pass status checks in order to be merged via merge queue.
+    needs: [checks, tests, deny, integration]
+    if: ${{ always() }}
+    steps:
+      - run: exit 1
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}