Add support for deployment labels to helm chart (#3194)

Problem: It's not possible to specify custom labels to be applied to the nginx gateway deployment

Solution: Add support for specifying custom labels to be applied on nginx gateway deployment

Author: Butterneck

charts/nginx-gateway-fabric/README.md

@@ -285,6 +285,7 @@ The following table lists the configurable parameters of the NGINX Gateway Fabri
 | `nginxGateway.image.repository` | The NGINX Gateway Fabric image to use | string | `"ghcr.io/nginx/nginx-gateway-fabric"` |
 | `nginxGateway.image.tag` |  | string | `"edge"` |
 | `nginxGateway.kind` | The kind of the NGINX Gateway Fabric installation - currently, only deployment is supported. | string | `"deployment"` |
+| `nginxGateway.labels` | Set of labels to be added for NGINX Gateway Fabric deployment. | object | `{}` |
 | `nginxGateway.leaderElection.enable` | Enable leader election. Leader election is used to avoid multiple replicas of the NGINX Gateway Fabric reporting the status of the Gateway API resources. If not enabled, all replicas of NGINX Gateway Fabric will update the statuses of the Gateway API resources. | bool | `true` |
 | `nginxGateway.leaderElection.lockName` | The name of the leader election lock. A Lease object with this name will be created in the same Namespace as the controller. | string | Autogenerated if not set or set to "". |
 | `nginxGateway.lifecycle` | The lifecycle of the nginx-gateway container. | object | `{}` |

charts/nginx-gateway-fabric/templates/deployment.yaml

@@ -6,6 +6,9 @@ metadata:
   namespace: {{ .Release.Namespace }}
   labels:
   {{- include "nginx-gateway.labels" . | nindent 4 }}
+  {{- with .Values.nginxGateway.labels }}
+  {{- toYaml . | nindent 4 }}
+  {{- end }}
 spec:
   replicas: {{ .Values.nginxGateway.replicaCount }}
   selector:
@@ -15,6 +18,9 @@ spec:
     metadata:
       labels:
       {{- include "nginx-gateway.selectorLabels" . | nindent 8 }}
+      {{- with .Values.nginxGateway.labels }}
+      {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- if or .Values.nginxGateway.podAnnotations .Values.metrics.enable }}
       annotations:
         {{- if .Values.nginxGateway.podAnnotations }}

charts/nginx-gateway-fabric/values.schema.json

@@ -456,6 +456,12 @@
           "required": [],
           "title": "kind"
         },
+        "labels": {
+          "description": "Set of labels to be added for NGINX Gateway Fabric deployment.",
+          "required": [],
+          "title": "labels",
+          "type": "object"
+        },
         "leaderElection": {
           "description": "The configuration for leader election.",
           "properties": {

charts/nginx-gateway-fabric/values.yaml

@@ -21,6 +21,9 @@ nginxGateway:
   # -- Set of custom annotations for the NGINX Gateway Fabric pods.
   podAnnotations: {}
 
+  # -- Set of labels to be added for NGINX Gateway Fabric deployment.
+  labels: {}
+
   # -- Set of custom annotations for GatewayClass objects.
   gatewayClassAnnotations: {}