fix golint in iscsi.go file
fix golint in iscsi.go file

Signed-off-by: Jia-wei Yu <bcea196ddcc07450d478dd9ccb6dbe58f6fbe218@gmail.com>

AmitKumarDas/maya,prateekpandey14/maya,openebs/maya,prateekpandey14/maya,openebs/maya,AmitKumarDas/maya,openebs/maya