ci: Include source-watcher in the e2e test suite

Signed-off-by: Stefan Prodan <stefan.prodan@gmail.com>

manifests/openshift/scc.yaml

@@ -26,6 +26,9 @@ subjects:
   - kind: ServiceAccount
     name: source-controller
     namespace: flux-system
+  - kind: ServiceAccount
+    name: source-watcher
+    namespace: flux-system
   - kind: ServiceAccount
     name: kustomize-controller
     namespace: flux-system