update traefik for aws elb ssl termination (#1017)

stable/traefik/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 name: traefik
 # Lock step with the Traefik version, appended with -a, -b, etc. to denote versions of the chart
-version: 1.2.1-a
+version: 1.2.1-b
 description: A Traefik based Kubernetes ingress controller with Let's Encrypt support
 keywords:
 - traefik

stable/traefik/templates/service.yaml

@@ -27,3 +27,6 @@ spec:
     name: http
   - port: 443
     name: https
+    {{- if not .Values.ssl.enabled }}
+    targetPort: 80
+    {{- end }}