Fixed docker.internal.gateway not displaying properly on live restore
Fixed docker.internal.gateway not displaying properly on live restore

Also includes review suggestions in daemon.initNetworkController():

- update godoc for setHostGatewayIP()
- change setHostGatewayIP() to get config, instead of daemon
- remove redundant nil check for controller

Signed-off-by: sanchayanghosh <6fe5c49abebb2921fc3230a522fc4c14f6fcdad6@outlook.com>
Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

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