Longhorn: Upgrade from 1.6.4. to 1.7.3

Change-Id: I4e713a453a6b9e983685e2db550066fd2694609f
diff --git a/charts/longhorn-1.6.4/templates/serviceaccount.yaml b/charts/longhorn-1.6.4/templates/serviceaccount.yaml
new file mode 100644
index 0000000..b0d6dd5
--- /dev/null
+++ b/charts/longhorn-1.6.4/templates/serviceaccount.yaml
@@ -0,0 +1,40 @@
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: longhorn-service-account
+  namespace: {{ include "release_namespace" . }}
+  labels: {{- include "longhorn.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: longhorn-ui-service-account
+  namespace: {{ include "release_namespace" . }}
+  labels: {{- include "longhorn.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  {{- if .Values.openshift.enabled }}
+  {{- if .Values.openshift.ui.route }}
+  {{- if not .Values.serviceAccount.annotations }}
+  annotations:
+  {{- end }}
+    serviceaccounts.openshift.io/oauth-redirectreference.primary: '{"kind":"OAuthRedirectReference","apiVersion":"v1","reference":{"kind":"Route","name":"longhorn-ui"}}'
+  {{- end }}
+  {{- end }}
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: longhorn-support-bundle
+  namespace: {{ include "release_namespace" . }}
+  labels: {{- include "longhorn.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
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