Fix race in setting ctrlr for network
Fix race in setting ctrlr for network

Race is with network.getController() method.

Signed-off-by: Alexander Morozov <4efb7da3e38416208b41d8021a942884d8a9435c@docker.com>

yosifkit/docker,nawawi/docker,mahak/docker,jimjag/docker,Ramzec/docker,vdemeester/docker,trebonian/docker,nalind/docker,moul/docker,moby/moby,bearstech/moby,docker/docker,moul/docker,thaJeztah/docker,konstruktoid/docker-upstream,konstruktoid/docker-upstream,cpuguy83/docker,Ramzec/docker,yosifkit/docker,mahak/docker,cpuguy83/docker,yosifkit/docker,flavio/docker,gnailuy/docker,cpuguy83/docker,flavio/docker,AkihiroSuda/docker,paralin/docker,moul/docker,jimjag/docker,djs55/docker,AkihiroSuda/docker,bearstech/moby,gnailuy/docker,nalind/docker,docker/docker,jameszhan/docker,AkihiroSuda/docker,nalind/docker,thaJeztah/docker,paralin/docker,nawawi/docker,mahak/docker,Ramzec/docker,moby/moby,bearstech/moby,trebonian/docker,Mokolea/docker,jimjag/docker,Mokolea/docker,thaJeztah/docker,docker/docker,nawawi/docker,yosifkit/docker,jimjag/docker,djs55/docker,flavio/docker,gnailuy/docker,Mokolea/docker,jameszhan/docker,AkihiroSuda/docker,djs55/docker,vdemeester/docker,nalind/docker,cpuguy83/docker,nawawi/docker,trebonian/docker,moul/docker,konstruktoid/docker-upstream,bearstech/moby,moby/moby,mahak/docker,jthelin/docker,konstruktoid/docker-upstream,gnailuy/docker,trebonian/docker,jameszhan/docker,vdemeester/docker,Ramzec/docker,paralin/docker,jthelin/docker,moby/moby,Mokolea/docker,flavio/docker,thaJeztah/docker,paralin/docker