[stable/prometheus-adapter] Add checksum of configMap as annotation (#8334)

* [stable/prometheus-adapter] Add checksum of configMap as annotation

- This adds checksum/config to the annotations which has sha256sum of
  the file custom-metrics-configmap.yaml
- This does the rolling update of the deployment when user does helm
  upgrade and there are changes to the configMap, so the adapter will
  pick up the latest changes in the config file
- ref:
  https://docs.helm.sh/charts_tips_and_tricks/#automatically-roll-deployments-when-configmaps-or-secrets-change
- Bump chart version

Signed-off-by: Bhavin Gandhi <bhavin7392@gmail.com>

* [stable/prometheus-adapter] Bump version to 0.2.0

Signed-off-by: Bhavin Gandhi <bhavin7392@gmail.com>

stable/prometheus-adapter/Chart.yaml

@@ -1,5 +1,5 @@
 name: prometheus-adapter
-version: v0.1.2
+version: v0.2.0
 appVersion: v0.2.1
 description: A Helm chart for k8s prometheus adapter
 home: https://github.com/DirectXMan12/k8s-prometheus-adapter

stable/prometheus-adapter/templates/custom-metrics-apiserver-deployment.yaml

@@ -21,6 +21,8 @@ spec:
         release: {{ .Release.Name }}
         heritage: {{ .Release.Service }}
       name: {{ template "k8s-prometheus-adapter.name" . }}
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/custom-metrics-configmap.yaml") . | sha256sum }}
     spec:
       securityContext:
         allowPrivilegeEscalation: false