scsi: target: Add virtual remote target

Create virtual remote target module.

This can be used to see a whole ACL/LUN/TPG configuration from all nodes in
storage cluster. For example, it permits se

scsi: target: Add virtual remote target

Create virtual remote target module.

This can be used to see a whole ACL/LUN/TPG configuration from all nodes in
storage cluster. For example, it permits setting up remote ports in ALUA
port groups. To report all ports in a cluster in REPORT TARGET PORT GROUP
command.

Suggested-by: Konstantin Shelekhin <[email protected]>
Signed-off-by: Dmitry Bogdanov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Mike Christie <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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