B #5489: Better sched messages for DS requirements (#1408)
B #5489: Better sched messages for DS requirements (#1408)

(cherry picked from commit 54baa5ac94818207b92450f259b5bdc25b17396b)

OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one,OpenNebula/one