hubble: Point hubble-ui to hubble-relay service

- Configure hubble-ui to connect to hubble-relay:80. Now hubble-relay is
  responsible for retrieving flows from Cilium instances.
- Remove hubble-grpc service.

Signed-off-by: Michi Mutsuzaki <michi@isovalent.com>

install/kubernetes/cilium/charts/agent/templates/svc.yaml

@@ -17,25 +17,6 @@ spec:
   selector:
     k8s-app: cilium
 {{- end }}
-{{- if .Values.global.hubble.ui.enabled }}
----
-kind: Service
-apiVersion: v1
-metadata:
-  name: hubble-grpc
-  namespace: {{ .Release.Namespace }}
-  labels:
-    k8s-app: hubble 
-spec:
-  type: ClusterIP
-  clusterIP: None
-  selector:
-    k8s-app: cilium
-  ports:
-  - targetPort: 50051
-    protocol: TCP
-    port: 50051
-{{- end }}
 {{- if and .Values.global.hubble.metrics.enabled (.Values.global.hubble.metrics.serviceMonitor.enabled) }}
 ---
 kind: Service

install/kubernetes/cilium/charts/hubble-ui/templates/deployment.yaml

@@ -27,9 +27,9 @@ spec:
             - name: HUBBLE
               value: "true"
             - name: HUBBLE_SERVICE
-              value: "hubble-grpc.{{ .Release.Namespace }}.svc.{{ .Values.clusterDomain }}"
+              value: "hubble-relay.{{ .Release.Namespace }}.svc.{{ .Values.clusterDomain }}"
             - name: HUBBLE_PORT
-              value: "50051"
+              value: "80"
           ports:
             - containerPort: 12000
               name: http