Trigger e2e in PR if no-merge-queue label is added

Author: ChristianZaccaria

.github/workflows/e2e_tests.yaml

@@ -2,8 +2,8 @@ name: e2e
 
 on:
   pull_request:
+    types: [ labeled ]
     branches:
-      - main
       - 'release-*'
     paths-ignore:
       - 'docs/**'
@@ -12,7 +12,6 @@ on:
       - 'LICENSE'
   push:
     branches:
-      - main
       - 'release-*'
     paths-ignore:
       - 'docs/**'
@@ -30,7 +29,7 @@ env:
 
 jobs:
   kubernetes:
-
+    if: ${{ github.event.label.name == 'no-merge-queue' || github.event_name == 'merge_group' }}
     runs-on: ubuntu-20.04-4core-gpu
 
     steps: