[hotfix] fix secret prometheus 2 (!95)

Co-authored-by: denis.patrakeev <denis.patrakeev@avroid.tech>
Reviewed-on: https://git.avroid.tech/K8s/k8s-configs/pulls/95

clusters/k8s-avroid-office.prod.local/namespaces/cloud-prod/monitoring/prometheus/values-override.yaml

@@ -66,6 +66,15 @@ server:
           name: prometheus-secret
           key: consul.secret
 
+  ## Additional Prometheus server Secret mounts
+  # Defines additional mounts with secrets. Secrets must be manually created in the namespace.
+  extraSecretMounts:
+    - name: consul-secret
+      mountPath: /etc/secrets
+      subPath: "consul-secret"
+      secretName: prometheus-secret
+      readOnly: true
+
   ingress:
     ## If true, Prometheus server Ingress will be created
     ##
@@ -173,7 +182,7 @@ serverFiles:
             tags: [ k8s_postgres_exporter ]
             services: [ monitoring_k8s_postgres_exporter ]
             authorization:
-              credentials: ${CONSUL_SECRET}
+              credentials_file: /etc/secrets/consul-secret/consul.secret
         relabel_configs:
           - source_labels: [ __meta_consul_service_metadata_metrics_path ]
             target_label: __metrics_path__