Add Kustomize layer for load balancers

Author: ryanjjung

bases/stalwart/service.yaml

@@ -14,9 +14,11 @@ metadata:
     service.beta.kubernetes.io/aws-load-balancer-healthcheck-protocol: http
     service.beta.kubernetes.io/aws-load-balancer-healthcheck-port: "8080"
     service.beta.kubernetes.io/aws-load-balancer-healthcheck-path: "/healthz/ready"
-    service.beta.kubernetes.io/aws-load-balancer-subnets: "mzla-tb-dev-public-eu-central-1a,mzla-tb-dev-public-eu-central-1b"
-    service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags: "environment=prod,project=mzla-tb-dev"
     service.beta.kubernetes.io/aws-load-balancer-attributes: "cross_zone_load_balancing.enable=true"
+    
+    # Update the below values in overlays
+    service.beta.kubernetes.io/aws-load-balancer-subnets: ""
+    service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags: "environment=not_set,project=not_set"
 spec:
   type: LoadBalancer
   selector:

overlays/tb-dev/kustomization.yaml

@@ -19,6 +19,7 @@ patches:
   - path: stalwart/cloudflare-tunnel.yaml
   - path: stalwart/configmap.yaml
   - path: stalwart/secrets.yaml
+  - path: stalwart/service.yaml
   - path: stalwart/serviceaccount.yaml
 
   - target:

overlays/tb-dev/stalwart/service.yaml

@@ -0,0 +1,8 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: stalwart-mail
+  annotations:
+    service.beta.kubernetes.io/aws-load-balancer-subnets: "mzla-tb-dev-public-eu-central-1a,mzla-tb-dev-public-eu-central-1b"
+    service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags: "environment=prod,project=mzla-tb-dev"

overlays/tb-prod/kustomization.yaml

@@ -19,6 +19,7 @@ patches:
   - path: stalwart/cloudflare-tunnel.yaml
   - path: stalwart/configmap.yaml
   - path: stalwart/secrets.yaml
+  - path: stalwart/service.yaml
   - path: stalwart/serviceaccount.yaml
 
   - target:

overlays/tb-prod/stalwart/service.yaml

@@ -0,0 +1,8 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: stalwart-mail
+  annotations:
+    service.beta.kubernetes.io/aws-load-balancer-subnets: "mzla-tb-prod-public-eu-central-1a,mzla-tb-prod-public-eu-central-1b"
+    service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags: "environment=prod,project=mzla-tb-prod"