Remove experimental from gateway infrastructure (#3272)

* Remove experimental from gateway infrastructure

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Codegen

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Change version of protoc-gen-grpc

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Change protoc version

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Update apis/v1/gateway_types.go

Co-authored-by: Rob Scott <rob.scott87@gmail.com>

* Add a warning about how modifying infrastructure.labels can result in pod churn

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Codegen

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Address PR feedback

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Fix whitespace

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Fixup

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Regen

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Add a git diff

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

* Regen after rebase

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>

---------

Signed-off-by: Keith Mattix II <keithmattix@microsoft.com>
Co-authored-by: Rob Scott <rob.scott87@gmail.com>

apis/v1/gateway_types.go

@@ -224,9 +224,8 @@ type GatewaySpec struct {
 
 	// Infrastructure defines infrastructure level attributes about this Gateway instance.
 	//
-	// Support: Core
+	// Support: Extended
 	//
-	// <gateway:experimental>
 	// +optional
 	Infrastructure *GatewayInfrastructure `json:"infrastructure,omitempty"`
 
@@ -711,6 +710,9 @@ type GatewayInfrastructure struct {
 	//
 	// An implementation may chose to add additional implementation-specific labels as they see fit.
 	//
+	// If an implementation maps these labels to Pods, or any other resource that would need to be recreated when labels
+	// change, it SHOULD clearly warn about this behavior in documentation.
+	//
 	// Support: Extended
 	//
 	// +optional