Properly cleanup ingress sandbox in controller
Properly cleanup ingress sandbox in controller

When ingress sandbox is removed, properly cleanup the reference in the
controller.

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

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