B #3229: Retry onehost sync on IOError (#3309)
B #3229: Retry onehost sync on IOError (#3309)


(cherry picked from commit 4a0b133cd23dbe4c2c3a764030c910a10563bcec)

atodorov-storpool/one,OpenNebula/one,baby-gnu/one,atodorov-storpool/one,baby-gnu/one,OpenNebula/one,baby-gnu/one,OpenNebula/one,OpenNebula/one,atodorov-storpool/one,baby-gnu/one,atodorov-storpool/one,OpenNebula/one,atodorov-storpool/one,baby-gnu/one,OpenNebula/one,atodorov-storpool/one,atodorov-storpool/one,baby-gnu/one,baby-gnu/one,OpenNebula/one,OpenNebula/one,atodorov-storpool/one,atodorov-storpool/one,OpenNebula/one,baby-gnu/one