fix(gateway): update overlays to patch ListenerSet hostnames

This updates the sandbox and production overlays to correctly patch the hostnames 
on both the ListenerSet and the HTTPRoute.

Author: TineoC

deploy/manifests/balancer/overlays/production/kustomization.yaml

@@ -12,9 +12,19 @@ images:
 
 patches:
   - target:
-      kind: HTTPRoute
-      name: balancer
+      kind: ListenerSet
+      name: balancer-listeners
     patch: |-
       - op: replace
-        path: /spec/hostnames/0
+        path: /spec/listeners/0/hostname
+        value: balancerproject.org
+      - op: replace
+        path: /spec/listeners/1/hostname
         value: balancerproject.org
+  - target:
+      kind: HTTPRoute
+      name: balancer
+    patch: |-
+      - op: add
+        path: /spec/hostnames
+        value: ["balancerproject.org"]

deploy/manifests/balancer/overlays/sandbox/kustomization.yaml

@@ -12,9 +12,19 @@ images:
 
 patches:
   - target:
-      kind: HTTPRoute
-      name: balancer
+      kind: ListenerSet
+      name: balancer-listeners
     patch: |-
       - op: replace
-        path: /spec/hostnames/0
+        path: /spec/listeners/0/hostname
+        value: sandbox.balancerproject.org
+      - op: replace
+        path: /spec/listeners/1/hostname
         value: sandbox.balancerproject.org
+  - target:
+      kind: HTTPRoute
+      name: balancer
+    patch: |-
+      - op: add
+        path: /spec/hostnames
+        value: ["sandbox.balancerproject.org"]