Update ovmanager to support maximum vni
Update ovmanager to support maximum vni

To support maximum possible overlay networks in swarm mode.

Signed-off-by: Jana Radhakrishnan <045898bda7d4800fe4909a9831e702ab79e266be@docker.com>

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