When trying to run the code I found that it failed, debugging I found the issue to a bad revision being found (`null`), fixing this gets the revision and fixes the process. I still notice that grafana dashboard 7642 still has issues compared to the other dashboards. I don't know why yet. Might look into that next but for now this fixes all the others.
* Do not explicitly set addon namespace
its hardcoded in the manifest, and there are multiple namespaces used so
hardcoded it to istio-system will fail
* fix -f flag