ci: run integration tests if the PR is labelled with "run-integration" (

#2353)

The label must be added as the PR is being created, not afterwards.

.github/workflows/ci.yml

@@ -179,7 +179,7 @@ jobs:
       - run: cd docs && zola build
   integration-shard:
     name: Shard Integration Tests
-    if: github.event_name != 'pull_request' || github.event.action == 'enqueued'
+    if: github.event_name != 'pull_request' || github.event.action == 'enqueued' || contains( github.event.pull_request.labels.*.name, 'run-integration')
     runs-on: ubuntu-latest
     outputs:
       matrix: ${{ steps.extract-tests.outputs.matrix }}
@@ -195,7 +195,7 @@ jobs:
           echo "matrix={\"test\":$(jq -c -n '$ARGS.positional' --args $(git grep -l '^//go:build integration' | xargs grep '^func Test' | awk '{print $2}' | cut -d'(' -f1))}" >> "$GITHUB_OUTPUT"
   integration-run:
     name: Integration Test
-    if: github.event_name != 'pull_request' || github.event.action == 'enqueued'
+    if: github.event_name != 'pull_request' || github.event.action == 'enqueued' || contains( github.event.pull_request.labels.*.name, 'run-integration')
     needs: integration-shard
     runs-on: ubuntu-latest
     strategy: