If anonymous container has alias names use it for DNS PTR record
If anonymous container has alias names use it for DNS PTR record

Signed-off-by: Santhosh Manohar <0806b0927a65802677e1bc58a740a42f957953d7@docker.com>

vdemeester/libnetwork,WeiZhang555/libnetwork,vdemeester/libnetwork,anortef/libnetwork,allencloud/libnetwork,aboch/libnetwork_new,jimmycmh/libnetwork,jimmycmh/libnetwork,jmzwcn/libnetwork,mbanikazemi/libnetwork,sainath14/libnetwork,mavenugo/libnetwork,msabansal/libnetwork,curtiszimmerman/libnetwork,pyakpyak/libnetwork,medallia/libnetwork,docker/libnetwork,cpuguy83/libnetwork,ityangchen/libnetwork,WeiZhang555/libnetwork,abhi/libnetwork,mahak/libnetwork,allencloud/libnetwork,fcrisciani/libnetwork,jmzwcn/libnetwork,kolyshkin/libnetwork,kolyshkin/libnetwork,anortef/libnetwork,cpuguy83/libnetwork,vdemeester/libnetwork,curtiszimmerman/libnetwork,mYmNeo/libnetwork,medallia/libnetwork,tmakita/libnetwork,abhi/libnetwork,sainath14/libnetwork,mbanikazemi/libnetwork,medallia/libnetwork,coolljt0725/libnetwork,pyakpyak/libnetwork,YujiOshima/libnetwork,ityangchen/libnetwork,YujiOshima/libnetwork,aboch/libnetwork_new,hackersdotmu/libnetwork,tmakita/libnetwork,amitkris/libnetwork,mahak/libnetwork,amitkris/libnetwork,docker/libnetwork,fcrisciani/libnetwork,mYmNeo/libnetwork,mavenugo/libnetwork,kolyshkin/libnetwork,msabansal/libnetwork,abhi/libnetwork,hackersdotmu/libnetwork,mahak/libnetwork,docker/libnetwork,coolljt0725/libnetwork