update service port name (#8003)

Signed-off-by: cpanato <ctadeu@gmail.com>

stable/kiam/Chart.yaml

@@ -1,5 +1,5 @@
 name: kiam
-version: 2.0.0-rc1
+version: 2.0.0-rc2
 appVersion: 3.0-rc1
 description: Integrate AWS IAM with Kubernetes
 keywords:

stable/kiam/templates/server-service.yaml

@@ -16,7 +16,7 @@ spec:
     component: "{{ .Values.server.name }}"
     release: {{ .Release.Name }}
   ports:
-    - name: grpc
+    - name: grpclb
       port: {{ .Values.server.service.port }}
       targetPort: {{ .Values.server.service.targetPort }}
       protocol: TCP