Move Canary over to its own subdomain to avoid re-registering codevalet.io with Let's Encrypt in different namespaces

See: https://github.com/jetstack/kube-lego/issues/146

k8s/21-canary.yaml

@@ -75,17 +75,16 @@ items:
       annotations:
         kubernetes.io/tls-acme: "true"
         kubernetes.io/ingress.class: "nginx"
-        ingress.kubernetes.io/rewrite-target: /
     spec:
       tls:
       - hosts:
-        - codevalet.io
+        - canary.codevalet.io
         secretName: ingress-tls
       rules:
-      - host: codevalet.io
+      - host: canary.codevalet.io
         http:
           paths:
-          - path: /canary/
+          - path: /
             backend:
               serviceName: canary
               servicePort: 80