Add info to cDOT driver doc
Add info to cDOT driver doc

Add known restriction to cDOT driver doc about requirement to have time
synched on storage and security services that are used by storage.

Change-Id: I443b3271ce88ccecb9865b0b9f69245772f4e1ab

openstack/manila,weiting-chen/manila,sajuptpm/manila,bswartz/manila,bswartz/manila,weiting-chen/manila,redhat-openstack/manila,sajuptpm/manila,openstack/manila,NetApp/manila,redhat-openstack/manila,jcsp/manila,scality/manila,vponomaryov/manila,scality/manila,jcsp/manila,vponomaryov/manila,NetApp/manila