scheduler: Reduce log output
scheduler: Reduce log output

Signed-off-by: Andrea Luzzardi <442ffe3ffbfd024afcf0b7f8b108d05bca3aae43@gmail.com>

jlhawn/swarmkit,AliyunContainerService/swarmkit,deljuven/swarmkit,RenaudWasTaken/swarmkit,yongtang/swarmkit,allencloud/swarmkit,fate-grand-order/swarmkit,diogomonica/swarmkit,docker/swarmkit,dperny/swarmkit-1,runshenzhu/swarmkit,cezarsa/swarmkit,yongtang/swarmkit,vasil-yordanov/swarmkit,deljuven/swarmkit,elifa/swarmkit,docker/swarmkit,jlhawn/swarmkit,yp-engineering/swarmkit,yp-engineering/swarmkit,sungwonh/swarmkit,aaronlehmann/swarmkit,alyyousuf7/swarmkit,Noyan759/swarmkit,vasil-yordanov/swarmkit,AliyunContainerService/swarmkit,Noyan759/swarmkit,RenaudWasTaken/swarmkit,diogomonica/swarmkit,allencloud/swarmkit,cheyang/swarmkit,cheyang/swarmkit,cezarsa/swarmkit,alyyousuf7/swarmkit,fate-grand-order/swarmkit,elifa/swarmkit,runshenzhu/swarmkit,dperny/swarmkit-1,aaronlehmann/swarmkit,sungwonh/swarmkit