Redirect HTTP to HTTPS (#2679)

This opens up port 80 on the load balancer IP and upgrades all HTTP
request to HTTPS.

TESTED=tested on alpha.

jetty/kubernetes/gateway/nomulus-gateway.yaml

@@ -5,6 +5,12 @@ metadata:
 spec:
   gatewayClassName: gke-l7-global-external-managed-mc
   listeners:
+  - name: http
+    protocol: HTTP
+    port: 80
+    allowedRoutes:
+      kinds:
+      - kind: HTTPRoute
   - name: https
     protocol: HTTPS
     port: 443
@@ -15,3 +21,19 @@ spec:
     allowedRoutes:
       kinds:
       - kind: HTTPRoute
+---
+apiVersion: gateway.networking.k8s.io/v1beta1
+kind: HTTPRoute
+metadata:
+  name: redirect
+spec:
+  parentRefs:
+  - kind: Gateway
+    name: nomulus
+    sectionName: http
+  rules:
+  - filters:
+    - type: RequestRedirect
+      requestRedirect:
+        scheme: https
+

jetty/kubernetes/gateway/nomulus-route-backend.yaml

@@ -6,6 +6,7 @@ spec:
   parentRefs:
   - kind: Gateway
     name: nomulus
+    sectionName: https
   hostnames:
     - "backend.BASE_DOMAIN"
   rules:

jetty/kubernetes/gateway/nomulus-route-console.yaml

@@ -6,6 +6,7 @@ spec:
   parentRefs:
   - kind: Gateway
     name: nomulus
+    sectionName: https
   hostnames:
     - "console.BASE_DOMAIN"
   rules:

jetty/kubernetes/gateway/nomulus-route-frontend.yaml

@@ -6,6 +6,7 @@ spec:
   parentRefs:
   - kind: Gateway
     name: nomulus
+    sectionName: https
   hostnames:
     - "frontend.BASE_DOMAIN"
   rules:

jetty/kubernetes/gateway/nomulus-route-pubapi.yaml

@@ -6,6 +6,7 @@ spec:
   parentRefs:
   - kind: Gateway
     name: nomulus
+    sectionName: https
   hostnames:
     - "pubapi.BASE_DOMAIN"
   rules: