Let's test upstream tests only based on '[test-upstream]' comment

Author: phracek

.github/workflows/container-upstream-tests.yml

@@ -19,7 +19,7 @@ jobs:
 
     if: |
       github.event.issue.pull_request
-      && (contains(github.event.comment.body, '[test-upstream]') || contains(github.event.comment.body, '[test-all]'))
+      && contains(github.event.comment.body, '[test-upstream]')
       && contains(fromJson('["OWNER", "MEMBER"]'), github.event.comment.author_association)
     steps:
       - uses: sclorg/tfaga-wrapper@main