Don't run upgrade tests against Knative releases 0.1 and 0.2
They're not available on these branches and will always fail.
@@ -225,6 +225,9 @@ presubmits:
preset-service-account: "true"
preset-bazel-scratch-dir: "true"
preset-bazel-remote-cache-enabled: "true"
+ skip_branches: # Skip these branches, as test isn't available.
+ - release-0.1
+ - release-0.2
spec:
containers:
- image: gcr.io/knative-tests/test-infra/prow-tests:latest
