[VOL-5506] Enable grpc stats

Change-Id: I106d78d29a637065aca3d825164ec2ae6ff84003
Signed-off-by: Abhay Kumar <abhay.kumar@radisys.com>
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index 030cc87..67d77ee 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -17,7 +17,7 @@
 
 ## Chart version for package 'voltha'
 ##   Increment when Chart.yaml changes
-version: "2.15.2"
+version: "2.15.3"
 
 description: "A Helm chart for Voltha based on K8S resources in Voltha project"
 keywords:
@@ -36,6 +36,6 @@
     url: "https://www.opennetworking.org"
 
 # appVersion refers to release version of voltha-go
-appVersion: "3.6.20"
+appVersion: "3.7.4"
 
 # [EOF]
diff --git a/voltha/templates/api-svc.yaml b/voltha/templates/api-svc.yaml
index 32dec43..993756d 100644
--- a/voltha/templates/api-svc.yaml
+++ b/voltha/templates/api-svc.yaml
@@ -15,6 +15,16 @@
 apiVersion: v1
 kind: Service
 metadata:
+  annotations:
+    meta.helm.sh/release-name: "{{ .Values.fullNameOverride }}-{{ .Chart.Name }}"
+    meta.helm.sh/release-namespace: "{{ .Release.Namespace }}"
+  labels:
+    app.kubernetes.io/managed-by: {{ quote .Release.Service }}
+    app.kubernetes.io/name: "read-write-core"
+    app.kubernetes.io/part-of: "voltha"
+    app.kubernetes.io/stack: "{{ .Values.global.stack_name }}"
+    app: "rw-core"
+    release: "{{ .Release.Name }}"
   name: "{{ template "fullname" . }}-api"
   namespace: "{{ .Release.Namespace }}"
 spec:
@@ -23,5 +33,5 @@
       port: 55555
       targetPort: 50057
   selector:
-    app: rw-core
+    app: "rw-core"
     release: "{{ .Release.Name }}"
diff --git a/voltha/templates/core-servicemonitor.yaml b/voltha/templates/core-servicemonitor.yaml
new file mode 100644
index 0000000..9e06f4d
--- /dev/null
+++ b/voltha/templates/core-servicemonitor.yaml
@@ -0,0 +1,42 @@
+# Copyright 2022-2023 Open Networking Foundation (ONF) and the ONF Contributors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  annotations:
+    meta.helm.sh/release-name: "{{ .Values.fullNameOverride }}-{{ .Chart.Name }}"
+    meta.helm.sh/release-namespace: "{{ .Release.Namespace }}"
+  labels:
+    app.kubernetes.io/managed-by: {{ quote .Release.Service }}
+    app.kubernetes.io/name: "read-write-core"
+    app.kubernetes.io/part-of: "voltha"
+    app.kubernetes.io/stack: "{{ .Values.global.stack_name }}"
+    app: "rw-core"
+    release: "{{ .Release.Name }}"
+  name: "{{ .Release.Name }}"
+  namespace: "{{ .Release.Namespace }}"
+spec:
+  endpoints:
+  - interval: 15s
+    path: /metrics
+    port: promserver
+  namespaceSelector:
+    matchNames:
+    - "voltha"
+  selector:
+    matchLabels:
+      app: "rw-core"
+      release: "{{ .Release.Name }}"
+
diff --git a/voltha/templates/core-svc.yaml b/voltha/templates/core-svc.yaml
index c3d115e..76e97ed 100644
--- a/voltha/templates/core-svc.yaml
+++ b/voltha/templates/core-svc.yaml
@@ -15,6 +15,16 @@
 apiVersion: v1
 kind: Service
 metadata:
+  annotations:
+    meta.helm.sh/release-name: "{{ .Values.fullNameOverride }}-{{ .Chart.Name }}"
+    meta.helm.sh/release-namespace: "{{ .Release.Namespace }}"
+  labels:
+    app.kubernetes.io/managed-by: {{ quote .Release.Service }}
+    app.kubernetes.io/name: "read-write-core"
+    app.kubernetes.io/part-of: "voltha"
+    app.kubernetes.io/stack: "{{ .Values.global.stack_name }}"
+    app: "rw-core"
+    release: "{{ .Release.Name }}"
   name: "{{ template "fullname" . }}-core"
   namespace: "{{ .Release.Namespace }}"
 spec:
@@ -22,6 +32,9 @@
     - name: core-grpc
       port: 55558
       targetPort: 50058
+    - name: promserver
+      port: 8081
+      targetPort: 8081
   selector:
     app: rw-core
     release: "{{ .Release.Name }}"