Bug#838540: open-iscsi logout-all.sh script fails to log out iscsi target

[Colby Ross]

Also, not sure if it is relevant or not, but after the discovery command 
was issued, it started attaching to the iSCSI share twice at boot. I had 
to manually remove both entries in 
/etc/iscsi/nodes/iqn.2015-12.org.cokenet.ctl:iscsi. After that, it 
stopped attaching to it twice, and is back to attaching to it once (as 
/dev/sdb).

Colby