ZED: Match added disk by pool/vdev GUID if found (#12217)

This enables ZED to auto-online vdevs that are not wholedisk managed by
ZFS.

Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>