chore(charts): define APIVersion template

Author: Kingdon Barrett

charts/database/templates/_helpers.tmpl

@@ -0,0 +1,12 @@
+{{/*
+Set apiVersion based on .Capabilities.APIVersions
+*/}}
+{{- 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/database/templates/database-deployment.yaml

@@ -1,5 +1,5 @@
 {{- if eq .Values.global.database_location "on-cluster" }}
-apiVersion: {{ .Values.global.api_group }}
+apiVersion: {{ template "APIVersion" . }}
 kind: Deployment
 metadata:
   name: deis-database