[bitnami/etcd] add Prometheus podmonitor relabelings parameter (#7399)

* add prelabelings field to Prometheus pod monitor

* update etcd README.md

* Update bitnami/etcd/README.md

Co-authored-by: Pablo Galego <pablogalegocarro@gmail.com>

* Update bitnami/etcd/values.yaml

Co-authored-by: Pablo Galego <pablogalegocarro@gmail.com>

* Update bitnami/etcd/values.yaml

Co-authored-by: Pablo Galego <pablogalegocarro@gmail.com>

Co-authored-by: Pablo Galego <pablogalegocarro@gmail.com>

bitnami/etcd/Chart.yaml

@@ -25,4 +25,4 @@ name: etcd
 sources:
   - https://github.com/bitnami/bitnami-docker-etcd
   - https://coreos.com/etcd/
-version: 6.7.0
+version: 6.8.0

bitnami/etcd/README.md

@@ -240,6 +240,7 @@ The command removes all the Kubernetes components associated with the chart and
 | `metrics.podMonitor.additionalLabels` | Additional labels that can be used so PodMonitors will be discovered by Prometheus | `{}`         |
 | `metrics.podMonitor.scheme`           | Scheme to use for scraping                                                         | `http`       |
 | `metrics.podMonitor.tlsConfig`        | TLS configuration used for scrape endpoints used by Prometheus                     | `{}`         |
+| `metrics.podMonitor.relabelings`      | Prometheus relabeling rules                                                         | `[]`         |
 
 
 ### Snapshotting parameters

bitnami/etcd/templates/podmonitor.yaml

@@ -30,6 +30,10 @@ spec:
       {{- if .Values.metrics.podMonitor.tlsConfig }}
       tlsConfig: {{- include "common.tplvalues.render" ( dict "value" .Values.metrics.podMonitor.tlsConfig "context" $ ) | nindent 8 }}
       {{- end }}
+      {{- if .Values.metrics.podMonitor.relabelings }}
+      relabelings: 
+      {{- include "common.tplvalues.render" (dict "value" .Values.metrics.podMonitor.relabelings "context" $) | nindent 8 }}
+      {{- end }}
   namespaceSelector:
     matchNames:
       - {{ .Release.Namespace }}

bitnami/etcd/values.yaml

@@ -645,6 +645,9 @@ metrics:
     ##       name: existingSecretName
     ##
     tlsConfig: {}
+    ## @param metrics.podMonitor.relabelings [array] Prometheus relabeling rules
+    ##
+    relabelings: []
 
 ## @section Snapshotting parameters