948b183042
open-isns is optional, not mandatory, since bump to version 2.1.9 in
commit 2314928cf8 and
https://github.com/open-iscsi/open-iscsi/commit/713524df809396e11f42d7691bd8ead2ffc1ca6b
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>