Allow the ingress class to be changed for letsencrypt.

@@ -24,11 +24,11 @@ spec:
     privateKeySecretRef:
       # Secret resource that will be used to store the account's private key.
       name: acme-account-key
-    # Add a single challenge solver, HTTP01 using nginx
+    # Add a single challenge solver, HTTP01 using istio
     solvers:
     - http01:
         ingress:
-          class: nginx
+          class: istio
 ---
 apiVersion: cert-manager.io/v1
 kind: ClusterIssuer
@@ -48,8 +48,8 @@ spec:
     privateKeySecretRef:
       # Secret resource that will be used to store the account's private key.
       name: acme-account-key
-    # Add a single challenge solver, HTTP01 using nginx
+    # Add a single challenge solver, HTTP01 using istio
     solvers:
     - http01:
         ingress:
-          class: nginx
+          class: istio

@@ -7,6 +7,10 @@ clusterIssuer:
     enabled: true
     email: name@example.com
     tls_key: replace-me
+    solvers:
+      - http01:
+          ingress:
+            class: istio
 root-ca:
   crt: null
   key: null

@@ -66,6 +66,9 @@ releases:
         spec:
           acme:
             email: {{ .Values.clusterIssuer.letsencrypt.email }}
+        {{- if .Values.clusterIssuer.letsencrypt.solvers }}
+            solvers: {{ .Values.clusterIssuer.letsencrypt.solvers | toYaml | nindent 14 }}
+        {{- end }}
       {{- else }}
         $patch: delete
       {{- end }}
@@ -78,6 +81,9 @@ releases:
         spec:
           acme:
             email: {{ .Values.clusterIssuer.letsencrypt.email }}
+        {{- if .Values.clusterIssuer.letsencrypt.solvers }}
+            solvers: {{ .Values.clusterIssuer.letsencrypt.solvers | toYaml | nindent 14 }}
+        {{- end }}
       {{- else }}
         $patch: delete
       {{- end }}