libcontainer: fix TestGetContainerState to check configs.NEWCGROUP
libcontainer: fix TestGetContainerState to check configs.NEWCGROUP

This test needs to handle the case of configs.NEWCGROUP
as Namespace's type.

Signed-off-by: Kenta Tada <bfcbc6141feda87cbc58e846dfb8f4969098b30b@sony.com>

xiaochenshen/runc,justincormack/runc,rhatdan/runc,opencontainers/runc,kolyshkin/runc,kolyshkin/runc,adrianreber/runc,mikebrow/runc,estesp/runc,mheon/runc,opencontainers/runc,mYmNeo/runc,xiaochenshen/runc,adrianreber/runc,justincormack/runc,kolyshkin/runc,mYmNeo/runc,estesp/runc,rhatdan/runc,estesp/runc,mheon/runc,opencontainers/runc,dqminh/runc,adrianreber/runc,xiaochenshen/runc,mikebrow/runc,dqminh/runc,rhatdan/runc,dqminh/runc,rhatdan/runc,kolyshkin/runc,mheon/runc,justincormack/runc,mYmNeo/runc,opencontainers/runc,dqminh/runc,mikebrow/runc