[integration] add testcases for `runc delete` command
[integration] add testcases for `runc delete` command

this patch add two testcases for the `runc delete` with
multi-containers. see : https://github.com/opencontainers/runc/pull/1053

Signed-off-by: Wang Long <e68b6ff438429ca41648c25d0f54e970cf858504@huawei.com>

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