[4211][helm] add korifiGatewayNamespace to allow gateway ns override (#4214)

* [4211][helm] add korifiGatewayNamespace to allow gateway ns override

* [4211][helm] add korifiGatewayNamespace to allow gateway ns override

* Add configurable gatewayNamespace with validation

- Add gatewayNamespace as a networking Helm value (default: korifi-gateway)
- Update values.schema.json with proper validation for the new field
- Modify gateway.yaml to use configurable namespace instead of release-name based
- Update api/ingress.yaml to reference gateway in the correct namespace
- Add pre-install/pre-upgrade hook to validate namespace exists before installation
- Include TTL on validation job for automatic cleanup
- Update Helm documentation to reflect the new configuration option

This change allows users to specify a custom namespace for the Korifi Gateway
instead of being hardcoded to {release-namespace}-gateway, while ensuring
backwards compatibility and proper validation.

* upd korifi-api ns

* remove unneeded validation cronjob

---------

Co-authored-by: Danail Branekov <[email protected]>

Author: vkazmin1

README.helm.md

@@ -116,6 +116,7 @@ Here are all the values that can be set for the chart:
 - `networking`: Networking configuration
   - `gatewayClass` (_String_): The name of the GatewayClass Korifi Gateway references
   - `gatewayInfrastructure`: Optional GatewayInfrastructure property of the Gateway, see https://gateway-api.sigs.k8s.io/reference/spec/#gateway.networking.k8s.io/v1.GatewayInfrastructure for contents
+  - `gatewayNamespace` (_String_): The namespace where the Korifi Gateway will be created. If the namespace does not exist, the helm chart will fail.
   - `gatewayPorts`: Ports for the Gateway listeners
     - `http` (_Integer_): HTTP port
     - `https` (_Integer_): HTTPS port

helm/korifi/api/ingress.yaml

@@ -8,7 +8,7 @@ spec:
   - group: gateway.networking.k8s.io
     kind: Gateway
     name: korifi
-    namespace: {{ .Release.Namespace }}-gateway
+    namespace: {{ .Values.networking.gatewayNamespace }}
   hostnames:
   - {{ .Values.api.apiServer.url }}
   rules:

helm/korifi/templates/gateway.yaml

@@ -1,8 +1,3 @@
-apiVersion: v1
-kind: Namespace
-metadata:
-  name: {{ .Release.Namespace }}-gateway
----
 apiVersion: gateway.networking.k8s.io/v1beta1
 kind: ReferenceGrant
 metadata:
@@ -12,7 +7,7 @@ spec:
   from:
   - group: gateway.networking.k8s.io
     kind: Gateway
-    namespace: {{ .Release.Namespace }}-gateway
+    namespace: {{ .Values.networking.gatewayNamespace }}
   to:
   - group: ""
     kind: Secret
@@ -22,7 +17,7 @@ kind: Gateway
 apiVersion: gateway.networking.k8s.io/v1beta1
 metadata:
   name: korifi
-  namespace: {{ .Release.Namespace }}-gateway
+  namespace: {{ .Values.networking.gatewayNamespace }}
 spec:
   gatewayClassName: {{ .Values.networking.gatewayClass }}
   {{- if .Values.networking.gatewayInfrastructure }}

helm/korifi/values.schema.json

@@ -472,6 +472,11 @@
       "type": "object",
       "description": "Networking configuration",
       "properties": {
+        "gatewayNamespace": {
+          "description": "The namespace where the Korifi Gateway will be created. If the namespace does not exist, the helm chart will fail.",
+          "type": "string",
+          "default": "korifi-gateway"
+        },
         "gatewayClass": {
           "description": "The name of the GatewayClass Korifi Gateway references",
           "type": "string"

helm/korifi/values.yaml

@@ -115,6 +115,7 @@ helm:
   hooksImage: alpine/k8s:1.25.2
 
 networking:
+  gatewayNamespace: korifi-gateway
   gatewayPorts:
     http: 80
     https: 443