chore(charts): define APIVersion template

Author: Kingdon Barrett

charts/controller/templates/_helpers.tmpl

@@ -10,3 +10,12 @@ rbac.authorization.k8s.io/v1alpha1
 rbac.authorization.k8s.io/v1
 {{- end -}}
 {{- end -}}
+{{- define "APIVersion" -}}
+{{- if .Capabilities.APIVersions.Has "apps/v1" -}}
+apps/v1
+{{- else if .Capabilities.APIVersions.Has "extensions/v1beta1" -}}
+extensions/v1beta1
+{{- else -}}
+apps/v1
+{{- end -}}
+{{- end -}}

charts/controller/templates/controller-deployment.yaml

@@ -1,10 +1,4 @@
-{{- if .Capabilities.APIVersions.Has "apps/v1" }}
-apiVersion: apps/v1
-{{- else if .Capabilities.APIVersions.Has "extensions/v1beta1" }}
-apiVersion: extensions/v1beta1
-{{- else }}
-apiVersion: apps/v1
-{{- end }}
+apiVersion: {{ template "APIVersion" . }}
 kind: Deployment
 metadata:
   name: deis-controller