Add ability to pass boolean args to cluster-autoscaler like logtostderr (#3297)

* Add ability to pass boolean args to cluster-autoscaler like logtostderr

*  Bump chart version

stable/cluster-autoscaler/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 description: Scales worker nodes within autoscaling groups.
 icon: https://github.com/kubernetes/kubernetes/blob/master/logo/logo.png
 name: cluster-autoscaler
-version: 0.4.0
+version: 0.4.1
 appVersion: 1.1.0
 sources:
 - https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler

stable/cluster-autoscaler/templates/deployment.yaml

@@ -39,7 +39,7 @@ spec:
             - --nodes={{ .minSize }}:{{ .maxSize }}:{{ .name }}
           {{- end }}
           {{- range $key, $value := .Values.extraArgs }}
-            - --{{ $key }}={{ $value }}
+            - --{{ $key }}{{ if $value }}={{ $value }}{{ end }}
           {{- end }}
           env:
           {{- if eq .Values.cloudProvider "aws" }}