Add more checks after folding

After folding has been completed, it is worth to use the dashboard to
ensure that are no remaining issues. Previous checks are also useful,
but after the cleanup all the noise in the dashboard should have
disappeared, which makes easier to spot real issues.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>

.gitlab-ci/defaults.yml

@@ -17,6 +17,7 @@ stages:
   - fold
   - manual-review
   - cleanup
+  - manual-check
   - rulez-check
   - branch-protection-relax
   - branch

.gitlab-ci/folding.yml

@@ -113,3 +113,34 @@ fold-cleanup-monitor:
     - if: $CI_JOB_NAME =~ $FORCE_JOB_SKIP
       when: never
     - when: on_success
+
+manual-check:
+  extends: .custom_globals_default
+  stage: manual-check
+  before_script: []
+
+  script:
+    - |
+      cat <<EOF
+      👷 Perform a final check using the dashboard.
+
+      − Use the dashboard and filter by release to ensure that all the pipelines for
+        main branches are green.
+      − Confirm that Gitlab, OBS and Aplty are in sync, at this stage there should not
+        be any issues reported by the dashboard.
+
+      ▶️ Once the above is validated, manually trigger the next job
+      EOF
+
+manual-check-done:
+  extends: .custom_globals_manual
+  stage: manual-check
+  needs:
+    - manual-check
+  before_script: []
+
+  script:
+    - |
+      cat <<EOF
+      Folding has been completed, enjoy!
+      EOF