ContainerStats: return early on unsupported API versions
ContainerStats: return early on unsupported API versions

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

jimjag/docker,thaJeztah/docker,thaJeztah/docker,moul/docker,Ramzec/docker,justincormack/docker,nawawi/docker,dims/docker,nawawi/docker,justincormack/docker,yosifkit/docker,flavio/docker,paralin/docker,yosifkit/docker,ibuildthecloud/docker,pradipd/moby,Mokolea/docker,crosbymichael/docker,kojiromike/docker,konstruktoid/docker-1,paralin/docker,docker/docker,cpuguy83/docker,tmp6154/docker,thaJeztah/docker,flavio/docker,mahak/docker,djs55/docker,mahak/docker,jameszhan/docker,cpuguy83/docker,moul/docker,bearstech/moby,konstruktoid/docker-1,trebonian/docker,moby/moby,kojiromike/docker,nalind/docker,kolyshkin/moby,gnailuy/docker,nawawi/docker,AkihiroSuda/docker,AkihiroSuda/docker,djs55/docker,gnailuy/docker,jimjag/docker,bearstech/moby,pradipd/moby,trebonian/docker,nalind/docker,dims/docker,jameszhan/docker,pradipd/moby,AkihiroSuda/docker,ibuildthecloud/docker,flavio/docker,yosifkit/docker,docker/docker,flavio/docker,paralin/docker,nalind/docker,vdemeester/docker,tmp6154/docker,konstruktoid/docker-upstream,estesp/docker,SvenDowideit/docker,cpuguy83/docker,moby/moby,moul/docker,kolyshkin/moby,SvenDowideit/docker,trebonian/docker,mahak/docker,Mokolea/docker,jimjag/docker,yongtang/docker,jthelin/docker,AkihiroSuda/docker,kolyshkin/moby,tmp6154/docker,Ramzec/docker,unclejack/docker,yongtang/docker,cpuguy83/docker,ibuildthecloud/docker,docker/docker,Mokolea/docker,jvanz/docker,konstruktoid/docker-upstream,nawawi/docker,moby/moby,djs55/docker,paralin/docker,Ramzec/docker,crosbymichael/docker,yosifkit/docker,nalind/docker,jvanz/docker,vdemeester/docker,bearstech/moby,SvenDowideit/docker,jimjag/docker,gnailuy/docker,crosbymichael/docker,justincormack/docker,Ramzec/docker,ibuildthecloud/docker,dims/docker,jvanz/docker,Mokolea/docker,trebonian/docker,jthelin/docker,vdemeester/docker,moby/moby,unclejack/docker,konstruktoid/docker-upstream,moul/docker,yongtang/docker,estesp/docker,konstruktoid/docker-1,konstruktoid/docker-upstream,jameszhan/docker,estesp/docker,mahak/docker,thaJeztah/docker,bearstech/moby,kojiromike/docker,gnailuy/docker,unclejack/docker,ibuildthecloud/docker