Add pod priorityClassName to flagger deployment template

Signed-off-by: Imre Nagi <imre.nagi2812@gmail.com>

charts/flagger/templates/deployment.yaml

@@ -48,6 +48,9 @@ spec:
           secret:
             secretName: "{{ .Values.istio.kubeconfig.secretName }}"
         {{- end }}
+      {{- if .Values.podPriorityClassName }}
+      priorityClassName: {{ .Values.podPriorityClassName }}
+      {{- end }}                  
       containers:
         - name: flagger
           {{- if .Values.securityContext.enabled }}

charts/flagger/values.yaml

@@ -14,6 +14,9 @@ podAnnotations:
   prometheus.io/port: "8080"
   appmesh.k8s.aws/sidecarInjectorWebhook: disabled
 
+# priority class name for pod priority configuration
+podPriorityClassName: ""
+
 metricsServer: "http://prometheus:9090"
 
 # accepted values are kubernetes, istio, linkerd, appmesh, nginx, gloo or supergloo:mesh.namespace (defaults to istio)