Migrate some of the nat tests in integration-cli to api tests
Migrate some of the nat tests in integration-cli to api tests

This fix migrates nat tests in docker_cli_nat_test.go
to api tests.

Signed-off-by: Yong Tang <765086fe2e0c1f980161f127fec596800f327f62@outlook.com>

johnstep/moby-moby,whuwxl/docker,dccurtis/docker,laijs/moby,jwhonce/docker,justincormack/docker,mikebrow/docker,SvenDowideit/docker,laijs/docker,unclejack/docker,AkihiroSuda/docker,jwhonce/docker,kojiromike/docker,rancher/docker,moul/docker,kolyshkin/moby,crosbymichael/docker,moby/moby,x1022as/docker,moul/docker,KarthikNayak/docker,tophj-ibm/docker,pradipd/moby,tophj-ibm/docker,Ramzec/docker,konstruktoid/docker-upstream,bearstech/moby,estesp/docker,jwhonce/docker,tophj-ibm/moby,kolyshkin/moby,paralin/docker,yosifkit/docker,jlhawn/docker,bearstech/moby,laijs/docker,jlhawn/docker,yongtang/docker,SvenDowideit/docker,scotttlin/docker,yosifkit/docker,thaJeztah/docker,konstruktoid/docker-1,cpuguy83/docker,gnailuy/docker,mahak/docker,jameszhan/docker,dims/docker,yongtang/docker,scotttlin/docker,jthelin/docker,gnailuy/docker,AkihiroSuda/docker,ibuildthecloud/docker,scotttlin/docker,kolyshkin/docker,pradipd/moby,laijs/docker,flavio/docker,nawawi/docker,AkihiroSuda/docker,moby/moby,dims/docker,unclejack/docker,mahak/docker,justincormack/docker,nalind/docker,rremer/moby,nalind/docker,tonistiigi/docker,rremer/moby,jvanz/docker,cpuguy83/docker,mahak/docker,mikebrow/docker,jimjag/docker,duglin/docker,jvanz/docker,kojiromike/docker,nawawi/docker,Mokolea/docker,jameszhan/docker,jthelin/docker,tmp6154/docker,vdemeester/docker,cpuguy83/docker,laijs/moby,pradipd/moby,noironetworks/docker,estesp/docker,moby/moby,nalind/docker,konstruktoid/docker-1,docker/docker,Ramzec/docker,jimjag/docker,bearstech/moby,ibuildthecloud/docker,x1022as/docker,SvenDowideit/docker,docker/docker,bearstech/moby,nalind/docker,tonistiigi/docker,paralin/docker,johnstep/moby-moby,KingEmet/docker,dmcgowan/docker,allencloud/docker,Mokolea/docker,paralin/docker,Ramzec/docker,nawawi/docker,YuPengZTE/docker,konstruktoid/docker-upstream,vdemeester/docker,crosbymichael/docker,kojiromike/docker,thaJeztah/docker,x1022as/docker,moul/docker,maxamillion/docker,estesp/docker,kolyshkin/moby,jlhawn/docker,trebonian/docker,justincormack/docker,djs55/docker,allencloud/docker,cpuguy83/docker,tophj-ibm/moby,konstruktoid/docker-upstream,tophj-ibm/docker,thaJeztah/docker,KingEmet/docker,moul/docker,dccurtis/docker,tmp6154/docker,djs55/docker,nawawi/docker,whuwxl/docker,yongtang/docker,whuwxl/docker,unclejack/docker,rancher/docker,ibuildthecloud/docker,tonistiigi/docker,mahak/docker,duglin/docker,allencloud/docker,YuPengZTE/docker,flavio/docker,trebonian/docker,crosbymichael/docker,mikebrow/docker,konstruktoid/docker-upstream,djs55/docker,moby/moby,AkihiroSuda/docker,dmcgowan/docker,kolyshkin/docker,KingEmet/docker,jameszhan/docker,gnailuy/docker,ibuildthecloud/docker,Mokolea/docker,paralin/docker,flavio/docker,Mokolea/docker,konstruktoid/docker-1,rremer/moby,rancher/docker,duglin/docker,laijs/moby,yosifkit/docker,tophj-ibm/moby,YuPengZTE/docker,thaJeztah/docker,KarthikNayak/docker,docker/docker,jimjag/docker,dmcgowan/docker,KarthikNayak/docker,maxamillion/docker,vdemeester/docker,trebonian/docker,tmp6154/docker,trebonian/docker,yosifkit/docker,noironetworks/docker,dccurtis/docker,jvanz/docker,Ramzec/docker,johnstep/moby-moby,flavio/docker,gnailuy/docker,maxamillion/docker,dims/docker,ibuildthecloud/docker,jimjag/docker,noironetworks/docker