CLOUDP-325901: Fix selectable e2e2 labels after nightly change (#2404)

Signed-off-by: jose.vazquez <jose.vazquez@mongodb.com>

Author: josvazg

.github/workflows/tests-e2e2.yaml

@@ -74,7 +74,6 @@ jobs:
           E2E2_LABELS: ${{ env.e2e2_labels }}
           USE_JSON: true
         run: |
-          PR_LABELS=${{ env.PR_LABELS }}
           # Nightly runs all tests, overriding PR labels as '["test/e2e2/*"]'
           if [ "${{ github.ref }}" == "refs/heads/main" ];then
             PR_LABELS='["test/e2e2/*"]'
@@ -83,14 +82,13 @@ jobs:
           echo PR_LABELS=${{ env.PR_LABELS }}
           echo E2E2_LABELS=${{ env.E2E2_LABELS }}
           if [ "${PR_LABELS}" == '["test/e2e2/*"]' ]; then
-            echo "["all-e2e2-tests"]" > result.json
+            echo '{"e2e2":["all-e2e2-tests"]}' > result.json
           else
             make compute-labels
             ./bin/ginkgo-labels > result.json
           fi
           echo "E2E2 tests to execute $(cat result.json | jq -c .e2e2)"
           echo "e2e2_matrix=$(cat result.json | jq -c .e2e2)" >> $GITHUB_OUTPUT
-
   compute:
     needs: detect-tests
     name: "Compute test matrix for k8s versions"