[stable/fluent-bit] Use apps/v1 api for DaemonSet if k8s > 1.9 (#17834) (#17838)

Signed-off-by: László Kondás <laszlo.kondas@gmail.com>

stable/fluent-bit/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: fluent-bit
-version: 2.7.1
+version: 2.7.2
 appVersion: 1.2.2
 description: Fast and Lightweight Log/Data Forwarder for Linux, BSD and OSX
 keywords:

stable/fluent-bit/templates/_helpers.tpl

@@ -65,3 +65,14 @@ Return the appropriate apiGroup for PodSecurityPolicy.
 {{- print "policy" -}}
 {{- end -}}
 {{- end -}}
+
+{{/*
+Return the appropriate apiVersion for DaemonSet.
+*/}}
+{{- define "daemonSet.apiVersion" -}}
+{{- if semverCompare "<1.9-0" .Capabilities.KubeVersion.GitVersion -}}
+{{- print "extensions/v1beta1" -}}
+{{- else -}}
+{{- print "apps/v1" -}}
+{{- end -}}
+{{- end -}}

stable/fluent-bit/templates/daemonset.yaml

@@ -1,4 +1,4 @@
-apiVersion: extensions/v1beta1
+apiVersion: {{ template "daemonSet.apiVersion" . }}
 kind: DaemonSet
 metadata:
   name: {{ template "fluent-bit.fullname" . }}
@@ -8,6 +8,13 @@ metadata:
     heritage: {{ .Release.Service }}
     release: {{ .Release.Name }}
 spec:
+  selector:
+    matchLabels:
+      app: {{ template "fluent-bit.name" . }}
+      release: {{ .Release.Name }}
+{{- if .Values.podLabels }}
+{{ toYaml .Values.podLabels | indent 6 }}
+{{- end }}
   updateStrategy:
     type: RollingUpdate
   template: