I noticed that the image tag for the custom-metrics-stackdriver-adapter deployment, is version v0.15.0, while the git tag is v0.15.1 https://github.com/GoogleCloudPlatform/k8s-stackdriver/blob/cm-sd-adapter-v0.15.1/custom-metrics-stackdriver-adapter/deploy/production/adapter_new_resource_model.yaml#L92