This patch applies,
* Modify sector "Configure user authentication for the driver" to make
it more readable
* Modify configuration flag "flashsystem_connection_protocol" for IBM
FlashSystem FC volume driver
* Initial configuration reference for IBM FlashSystem iSCSI volume
driver
* Modify "Limitation and known issues" for we are supporting both FC
and iSCSI now
* Add a new limitation to "Limitation and known issues" for IBM
FlashSystem behaviour
Change-Id: I3f9b25addff250d5ac7f6fdda704bd07ded1ca4b
3feeb9dc34