Add document to disallow cross namespace match explicitly

Author: hzxuzhonghu

api/v1alpha2/inferencepool_types.go

@@ -50,6 +50,8 @@ type InferencePoolSpec struct {
 	// that should be included in the InferencePool.
 	// In some cases, implementations may translate this field to a Service selector, so this matches the simple
 	// map used for Service selectors instead of the full Kubernetes LabelSelector type.
+	// If sepecified, it will be applied to match the model server pods in the same namespace as the InferencePool.
+	// Cross namesoace selector is not supported.
 	//
 	// +kubebuilder:validation:Required
 	Selector map[LabelKey]LabelValue `json:"selector"`

config/crd/bases/inference.networking.x-k8s.io_inferencepools.yaml

@@ -109,6 +109,8 @@ spec:
                   that should be included in the InferencePool.
                   In some cases, implementations may translate this field to a Service selector, so this matches the simple
                   map used for Service selectors instead of the full Kubernetes LabelSelector type.
+                  If sepecified, it will be applied to match the model server pods in the same namespace as the InferencePool.
+                  Cross namesoace selector is not supported.
                 type: object
               targetPortNumber:
                 description: |-