Add spark service

spark/base/kustomization.yaml

@@ -1,4 +1,4 @@
 ---
-resources: [spark-ingress.yml]
+resources: [spark-ingress.yml, spark-service.yml]
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization

spark/base/spark-service.yml

@@ -0,0 +1,12 @@
+---
+kind: Service
+apiVersion: v1
+metadata:
+  name: spark-ui-proxy
+spec:
+  ports:
+    - port: 80
+      targetPort: 80
+  selector:
+    component: spark-ui-proxy
+  type: LoadBalancer