UNITTEST: Bypass userns test on platform without userns support
UNITTEST: Bypass userns test on platform without userns support

We should bypass userns test instead of show fail in platform
without userns support.

Signed-off-by: Zhao Lei <aacdd228f50c574b28b524b23f12fb9d52d6e0e3@cn.fujitsu.com>

sunyuan3/runc,crosbymichael/runc,kolyshkin/runc,vbatts/runc,maxamillion/runc,laijs/runc,crosbymichael/runc,WeiZhang555/runc,mheon/runc,laijs/runc,nkwilson/runc,rajasec/runc,wking/runc,mikebrow/runc,hqhq/runc,dqminh/runc,avagin/runc,keloyang/runc,justincormack/runc,justincormack/runc,mYmNeo/runc,cloudfoundry-incubator/runc,vbatts/runc,coolljt0725/runc,rhatdan/runc,WeiZhang555/runc,cloudfoundry-incubator/runc,coolljt0725/runc,mikebrow/runc,shishir-a412ed/runc,estesp/runc,xiaochenshen/runc,xiaochenshen/runc,cyphar/runc,coolljt0725/runc,mYmNeo/runc,kolyshkin/runc,jhowardmsft/runc,cloudfoundry-incubator/runc,dqminh/runc,maxamillion/runc,cyphar/runc,estesp/runc,rhatdan/runc,docker/runc,opencontainers/runc,mheon/runc,jhowardmsft/runc,stefanberger/runc,crosbymichael/runc,opencontainers/runc,rhatdan/runc,stefanberger/runc,estesp/runc,dqminh/runc,kolyshkin/runc,dqminh/runc,stefanberger/runc,adrianreber/runc,rhatdan/runc,sunyuan3/runc,wking/runc,justincormack/runc,keloyang/runc,xiaochenshen/runc,jhowardmsft/runc,mYmNeo/runc,opencontainers/runc,shishir-a412ed/runc,shishir-a412ed/runc,adrianreber/runc,sunyuan3/runc,hqhq/runc,cyphar/runc,nkwilson/runc,docker/runc,kolyshkin/runc,opencontainers/runc,rajasec/runc,docker/runc,mheon/runc,adrianreber/runc,WeiZhang555/runc,keloyang/runc,hqhq/runc,avagin/runc,laijs/runc,avagin/runc,nkwilson/runc,rajasec/runc,vbatts/runc,wking/runc,mikebrow/runc,maxamillion/runc