added annotations for node-exporter-daemonset (#6387)

* added annotations for node-exporter-daemonset

* fixed typo for annotation

* updated version

* typo fix

* Bump minor version for new feature

stable/prometheus/Chart.yaml

@@ -1,5 +1,5 @@
 name: prometheus
-version: 6.7.5
+version: 6.8.0
 appVersion: 2.3.1
 description: Prometheus is a monitoring system and time series database.
 home: https://prometheus.io/

stable/prometheus/templates/node-exporter-daemonset.yaml

@@ -2,6 +2,10 @@
 apiVersion: extensions/v1beta1
 kind: DaemonSet
 metadata:
+{{- if .Values.nodeExporter.deploymentAnnotations }}
+  annotations:
+{{ toYaml .Values.nodeExporter.deploymentAnnotations | indent 4 }}
+{{- end }}
   labels:
     app: {{ template "prometheus.name" . }}
     chart: {{ .Chart.Name }}-{{ .Chart.Version }}