adds Lets Encrypt config flags (#14292)

Signed-off-by: Taylor Silva <tsilva@pivotal.io>
Co-authored-by: Bishoy Youssef <byoussef@pivotal.io>

stable/concourse/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 name: concourse
-version: 6.2.2
-appVersion: 5.2.0
+version: 6.3.0
+appVersion: 5.3.0
 description: Concourse is a simple and scalable CI system.
 icon: https://avatars1.githubusercontent.com/u/7809479
 keywords:

stable/concourse/templates/web-deployment.yaml

@@ -965,6 +965,14 @@ spec:
             - name: CONCOURSE_TSA_HEARTBEAT_INTERVAL
               value: {{ .Values.concourse.web.tsa.heartbeatInterval | quote }}
             {{- end }}
+            {{- if .Values.concourse.web.letsEncrypt.enabled }}
+            - name: CONCOURSE_ENABLE_LETS_ENCRYPT
+              value: {{ .Values.concourse.web.letsEncrypt.enabled | quote }}
+            {{- end }}
+            {{- if .Values.concourse.web.letsEncrypt.acmeURL }}
+            - name: CONCOURSE_LETS_ENCRYPT_ACME_URL
+              value: {{ .Values.concourse.web.letsEncrypt.acmeURL | quote }}
+            {{- end }}
 {{- if .Values.web.env }}
 {{ toYaml .Values.web.env | indent 12 }}
 {{- end }}

stable/concourse/values.yaml

@@ -964,6 +964,15 @@ concourse:
       ##
       heartbeatInterval:
 
+    letsEncrypt:
+      ## Automatically configure TLS certificates via Let's Encrypt/ACME.
+      ##
+      enabled: false
+
+      ## URL of the ACME CA directory endpoint.
+      ##
+      acmeURL:
+
   worker:
     ## Signal to send to the worker container when shutting down.
     ## Possible values: