add health check for paaas

apps/base/customer1/paaas-landing/deployment.yaml

@@ -32,6 +32,8 @@ kind: Service
 metadata:
   name: paaas-landing-svc
   namespace: customer1
+  annotations:
+    networking.gke.io/healthcheck-policy: paaas-healthcheck
 spec:
   selector:
     app: paaas-landing

apps/base/customer1/paaas-landing/healthcheck.yaml

@@ -0,0 +1,14 @@
+apiVersion: networking.gke.io/v1
+kind: HealthCheckPolicy
+metadata:
+  name: paaas-healthcheck
+  namespace: customer1
+spec:
+  default:
+    checkIntervalSec: 10
+    timeoutSec: 5
+    healthyThreshold: 2
+    unhealthyThreshold: 2
+    httpHealthCheck:
+      port: 80
+      requestPath: /

apps/base/customer1/paaas-landing/kustomization.yaml

@@ -2,3 +2,4 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
   - deployment.yaml
+  - healthcheck.yaml