infra: route GoAlert through VK Istio

infrastructure/istio-config/vk-infra/istio-config.yaml

@@ -103,6 +103,17 @@ spec:
                 renewBefore: 360h0m0s
                 privateKey:
                   rotationPolicy: Always
+            goalert-tls:
+              dnsNames:
+                - goalert.infra.sarex.io
+              issuerRef:
+                name: letsencrypt-issuer-istio
+                kind: ClusterIssuer
+              spec:
+                duration: 2160h0m0s
+                renewBefore: 360h0m0s
+                privateKey:
+                  rotationPolicy: Always
         istio:
           gateways:
             vault:
@@ -172,6 +183,17 @@ spec:
                   tls:
                     credentialName: wiki-tls
                     mode: SIMPLE
+            goalert:
+              name: goalert-gateway
+              namespace: istio-system
+              selector:
+                istio: ingressgateway
+              servers:
+                - hosts:
+                    - goalert.infra.sarex.io
+                  tls:
+                    credentialName: goalert-tls
+                    mode: SIMPLE
           virtualServices:
             vault-virt-service:
               namespace: istio-system
@@ -250,3 +272,14 @@ spec:
                     prefix: /
                   service: outline.outline.svc.cluster.local
                   port: 80
+            goalert-virt-service:
+              namespace: istio-system
+              hosts:
+                - goalert.infra.sarex.io
+              gateways:
+                - istio-system/goalert-gateway
+              routes:
+                - path:
+                    prefix: /
+                  service: goalert.goalert.svc.cluster.local
+                  port: 8081