BugLink: http://bugs.launchpad.net/bugs/1541456

set ATIO/Request/Response Queues and Default number
of outstanding command to 4k.
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
(cherry picked from commit e7b42e33)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>