Deplucated SelfLink Parameter

[tozastation]

Websocket Proxy uses selflink, but selflink is removed on next sdk version
Please create alternative plan

// SelfLink is a URL representing this object.
	// Populated by the system.
	// Read-only.
	//
	// DEPRECATED
	// Kubernetes will stop propagating this field in 1.20 release and the field is planned
	// to be removed in 1.21 release.
	// +optional
	SelfLink string `json:"selfLink,omitempty" protobuf:"bytes,4,opt,name=selfLink"`

dependecies #1