[CI] Add LoadBalancer Service for Premerge Advisor

This allows for cross cluster communication so the two can exchange data about
build failures.

Reviewers: cmtice

Reviewed By: cmtice

Pull Request: #628

Author: boomanaiden154

premerge/advisor_external_service.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: premerge-advisor-external
+  namespace: premerge-advisor
+spec:
+  selector:
+    app.kubernetes.io/name: premerge-advisor
+  ports:
+    - protocol: TCP
+      port: 5000
+      targetPort: 5000
+  type: LoadBalancer

premerge/premerge_resources/main.tf

@@ -509,6 +509,11 @@ resource "kubernetes_manifest" "premerge_advisor_service" {
   depends_on = [kubernetes_namespace.premerge_advisor]
 }
 
+resource "kubernetes_manifest" "premerge_advisor_external_service" {
+  manifest   = yamldecode(file("advisor_external_service.yaml"))
+  depends_on = [kubernetes_namespace.premerge_advisor]
+}
+
 resource "kubernetes_namespace" "grafana" {
   metadata {
     name = "grafana"