Flagger has unauthorized access to Prometheus in Rancher v.2.4.8

[DanielDziubecki]

Hi, we are using Rancher v.2.4.8 and his integration with Prometheus. Rancher is using this auth-plugin https://github.com/rancher/prometheus-auth which is protecting access to query path which flagger needs to access. This is causing a following error:

Metrics server http://prometheus-operated.cattle-prometheus.svc.cluster.local:9090 unreachable running query failed: error response: unauthorized

We would like to somehow add the required token/secret/serviceaccount so that Flagger could use it to authorize in Prometheus.