kube-lego: Make LEGO_EMAIL a required field (#912)

* Add check for config.LEGO_EMAIL

* Don't set a default LEGO_EMAIL

* Bump chart version

stable/kube-lego/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Automatically requests certificates from Let's Encrypt
 name: kube-lego
-version: 0.1.8
+version: 0.1.9
 keywords:
   - kube-lego
   - letsencrypt

stable/kube-lego/templates/deployment.yaml

@@ -32,6 +32,7 @@ spec:
               valueFrom:
                 fieldRef:
                   fieldPath: status.podIP
+          # {{ required "config.LEGO_EMAIL is a required field" .Values.config.LEGO_EMAIL }}
           {{- range $key, $value := .Values.config }}
             - name: "{{ $key }}"
               value: "{{ $value }}"

stable/kube-lego/values.yaml

@@ -4,7 +4,7 @@
 config:
   ## Email address to use for registration with Let's Encrypt
   ##
-  LEGO_EMAIL: my@email.tld
+  # LEGO_EMAIL: my@email.tld
 
   ## Let's Encrypt API endpoint
   ## Production: https://acme-v01.api.letsencrypt.org/directory