Add label platform/application to pods

Add support to 'app.starlingx.io/component' to be overwritten
by user override, with possible values being 'platform' and
'application'. With 'platform' being the default value. This
change will also restart the pods if the label changes.

Test Plan:
PASS: build-pkgs -c -p  metrics-server-helm/stx-metrics-server-helm
PASS: upload/apply/remove/delete/update metrics-server.
PASS: Install metrics-server and check if pods have the label
'app.starlingx.io/component' with the value 'platform'.
PASS: Change the value of the isApplicationLabel to true using
"system helm-override-update" and check, if after re-applying
the app, the label 'app.starlingx.component' changes to
application' in the pods.
PASS: Use 'system application-apply metrics-server' when there is
a change to be applied to 'app.starlingx.component' and verify if the
pod is restarted.
PASS: If "isApplicationLabel" is updated with a value other than
true or false, the label on the pods "app.starlingx.io/component"
will not change.

Story: 2010612
Task: 49098

Change-Id: I9c732fface93ba426b1a1f0421aefaf8a7a10f0a
Signed-off-by: David Barbosa Bastos <david.barbosabastos@windriver.com>

metrics-server-helm/debian/deb_folder/rules

@@ -15,6 +15,7 @@ override_dh_auto_build:
 
 	# Apply patch to code
 	cd metrics-server && patch -p1 < ../0001-Add-sample-app-to-metrics-server.patch
+	cd metrics-server && patch -p1 < ../0002-Add-label-platform-application-to-pods.patch
 
 	# Create the TGZ file.
 	make metrics-server

metrics-server-helm/files/0001-Add-sample-app-to-metrics-server.patch

@@ -1,7 +1,7 @@
-From da1d57493657751bc5cce4379f254182e3ea0e73 Mon Sep 17 00:00:00 2001
+From 84565d75db7481edd3c27a29c010afb4fb688b4c Mon Sep 17 00:00:00 2001
 From: Luiz Felipe Kina <LuizFelipe.EiskeKina@windriver.com>
 Date: Thu, 21 Sep 2023 15:24:19 -0300
-Subject: [PATCH] Add sample app to metrics-server
+Subject: [PATCH 1/2] Add sample app to metrics-server
 
 ---
  templates/sample-app-cluster-role-binding.yml | 16 ++++++++++++
@@ -125,4 +125,5 @@ index fba10aa..b31a5fb 100644
 +    tag: stx.7.0-v1.0.0
 +
 -- 
-2.25.1
+2.34.1
+

metrics-server-helm/files/0002-Add-label-platform-application-to-pods.patch

@@ -0,0 +1,49 @@
+From acb714d1a5b52b7246f616858fa2ee5e44f51289 Mon Sep 17 00:00:00 2001
+From: dbarbosa <david.barbosabastos@windriver.com>
+Date: Wed, 13 Dec 2023 18:39:15 -0300
+Subject: [PATCH 2/2] Add label platform/application to pods
+
+Add support to 'app.starlingx.io/component' to be overwritten
+by user override, with possible values being 'platform' and
+'application'. With 'platform' being the default value. This
+change will also restart the pods if the label in namespace
+change.
+---
+ templates/deployment.yaml | 2 ++
+ values.yaml               | 1 +
+ 2 files changed, 3 insertions(+)
+
+diff --git a/templates/deployment.yaml b/templates/deployment.yaml
+index 1d656fc..097c55f 100644
+--- a/templates/deployment.yaml
++++ b/templates/deployment.yaml
+@@ -21,12 +21,14 @@ spec:
+   template:
+     metadata:
+       labels:
++        app.starlingx.io/component: {{ ternary "application" "platform" .Values.isApplicationLabel}}
+         {{- include "metrics-server.selectorLabels" . | nindent 8 }}
+       {{- with .Values.podLabels }}
+         {{- toYaml . | nindent 8 }}
+       {{- end }}
+       {{- with .Values.podAnnotations }}
+       annotations:
++        configchecksum: {{ toYaml .Values.isApplicationLabel | sha256sum | trunc 63 }}
+         {{- toYaml . | nindent 8 }}
+       {{- end }}
+     spec:
+diff --git a/values.yaml b/values.yaml
+index b31a5fb..e6992c9 100644
+--- a/values.yaml
++++ b/values.yaml
+@@ -45,6 +45,7 @@ apiService:
+   # The PEM encoded CA bundle for TLS verification
+   caBundle: ""
+ 
++isApplicationLabel: false
+ commonLabels: {}
+ podLabels: {}
+ podAnnotations: {}
+-- 
+2.34.1
+

readme.md

@@ -21,6 +21,7 @@ metrics-server-armada-app
 │   │   └── meta_data.yaml
 │   └── files
 │       ├── 0001-Add-sample-app-to-metrics-server.patch
+|       ├── 0002-Add-label-platform-application-to-pods.patch
 │       └── Makefile
 ├── readme.md
 ├── requirements.txt