Add namespace to prom role

The helm template command does not output a Prometheus Role with a namespace, and will cause the prometheus deployment to crash. This PR adds a namespace to the helm template.

Signed-off-by: Matz Haugen <matz.haugen@cognite.com>

chart/openfaas/templates/prometheus-rbac.yaml

@@ -83,6 +83,7 @@ apiVersion: rbac.authorization.k8s.io/v1
 kind: Role
 metadata:
   name: {{ .Release.Name }}-prometheus
+  namespace: {{ .Release.Namespace | quote }}
   labels:
     app: {{ template "openfaas.name" . }}
     chart: {{ .Chart.Name }}-{{ .Chart.Version }}