Longhorn: Upgrade from 1.8.1 to 1.9.0

Change-Id: I809890d3f73e85119c5f3d97e53856bd371c8c81
diff --git a/charts/longhorn-1.8.1/templates/tls-secrets.yaml b/charts/longhorn-1.8.1/templates/tls-secrets.yaml
new file mode 100644
index 0000000..74c4342
--- /dev/null
+++ b/charts/longhorn-1.8.1/templates/tls-secrets.yaml
@@ -0,0 +1,16 @@
+{{- if .Values.ingress.enabled }}
+{{- range .Values.ingress.secrets }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ .name }}
+  namespace: {{ include "release_namespace" $ }}
+  labels: {{- include "longhorn.labels" $ | nindent 4 }}
+    app: longhorn
+type: kubernetes.io/tls
+data:
+  tls.crt: {{ .certificate | b64enc }}
+  tls.key: {{ .key | b64enc }}
+---
+{{- end }}
+{{- end }}