Kube-prometheus: add additional labels for rules configMap (#1444)

* add additional labels for rules configMap

bring kube-prometheus closer to feature parity with other Helm configs

helm/kube-prometheus/Chart.yaml

@@ -7,4 +7,4 @@ maintainers:
 name: kube-prometheus
 sources:
   - https://github.com/coreos/prometheus-operator
-version: 0.0.93
+version: 0.0.95

helm/kube-prometheus/templates/configmap.yaml

@@ -8,6 +8,9 @@ metadata:
     prometheus: {{ .Release.Name }}
     release: {{ .Release.Name }}
     role: alert-rules
+    {{- if .Values.additionalRulesConfigMapLabels }}
+{{ toYaml .Values.additionalRulesConfigMapLabels | indent 4 }}
+    {{- end }}
   name: {{ template "kube-prometheus.fullname" . }}
 data:
 {{- if .Values.prometheusRules }}

helm/kube-prometheus/values.yaml

@@ -439,3 +439,9 @@ prometheus:
 deployCoreDNS: false
 deployKubeDNS: true
 deployKubeEtcd: true
+
+##Custom Labels to be added to Prometheus Rules ConfigMap
+##
+additionalRulesConfigMapLabels: {}
+  # additionalRulesConfigMapLabels:
+  #   team: devops