fix: remove spec.subdomain field from OpenShift route (#209)

This spec.subdomain field is not part of OpenShift 3.11 route OpenAPI
specification and since it's empty it can safely be removed without impacting
OpenShift 4.

charts/argo-cd/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: "1.3.6"
 description: A Helm chart for ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes.
 name: argo-cd
-version: 1.6.2
+version: 1.6.3
 home: https://github.com/argoproj/argo-helm
 icon: https://raw.githubusercontent.com/argoproj/argo/master/docs/assets/argo.png
 keywords:

charts/argo-cd/templates/argocd-server/route.yaml

@@ -16,7 +16,6 @@ metadata:
 {{- end }}
 spec:
   host: {{ .Values.server.route.hostname | quote }}
-  subdomain: ''
   to:
     kind: Service
     name: {{ template "argo-cd.server.fullname" . }}