PROMETHEUS_NAME env variable seems to be not correctly integrated

[ventaubain]

Expected Behavior

I want to use prometheusOperator option to add scrap configuration to a kube-prometheus placed on a custom namespace.
I set PROMETHEUS_NAMESPACE and PROMETHEUS_NAME in the operator yaml but the operator logs (during tenant creation) return:

E0907 08:34:06.480375 1 main-controller.go:676] error syncing 'minio-storage/minio-storage': More than 1 prometheus found on namespace monitoring. PROMETHEUS_NAME not specified.

Current Behavior

PROMETHEUS_NAMESPACE is correctly handle but PROMETHEUS_NAME seems to not.

Steps to Reproduce (for bugs)

1. helm install --namespace minio-operator --create-namespace minio-operator minio/operator -f values.yaml

values.yaml

# https://github.com/minio/operator/blob/master/helm/operator/values.yaml
operator:
  ## Setup environment variables for the Operator
   env:
     - name: PROMETHEUS_NAMESPACE
       value: "monitoring"
     - name: PROMETHEUS_NAME
       value: "kube-prometheus-stack-prometheus"

2. Create a tenant with prometheusOperator: true in the corresponding values.yaml. Be sure to have a kube-prometheus operator deployed in the monitoring namesapce
3. Show logs kubectl logs service/operator -n minio-operator

Your Environment

• Version used (minio-operator): 5.0.7
• Environment name and version (e.g. kubernetes v1.17.2): v1.26.8