Connect to this vnode. All flags and modes are defined in https://fuchsia.googlesource.com/fuchsia/+/master/zircon/system/fidl/fuchsia-io/io.fidl
By default param
#parentFlags is all rights, so that open will allow
all rights requested on the incoming
This param is used by clone to restrict cloning.
int connect(int flags, int mode, InterfaceRequest<Node> request, [int parentFlags = Flags.fsRights]);