fabrics: don't treat host_traddr 'none' as a valid hostname

We treat 'none' as an escape value for optional arguments, do the same
for host_traddr.

This makes prints like the below go away when passing --host-traddr=none:
sh[3244]: failed to resolve host none info

Signed-off-by: Sagi Grimberg <[email protected]>
Signed-off-by: Daniel Wagner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: sagigrimberg

src/nvme/tree.c

@@ -960,6 +960,8 @@ static bool traddr_is_hostname(const char *transport, const char *traddr)
 
 	if (!traddr || !transport)
 		return false;
+	if (!strcmp(traddr, "none"))
+		return false;
 	if (strcmp(transport, "tcp") &&
 	    strcmp(transport, "rdma"))
 		return false;