Make sure signalAllProcesses is invoked in the function of destroy
Make sure signalAllProcesses is invoked in the function of destroy

It's expect that signalAllProcesses is invoked when container shares
pid namespace. share pid ns contains the following conditions:

{
    // no specify pid ns
}
{
    "type": "pid",
    "path": "/proc/${num}/ns/pid"
}

Signed-off-by: Shukui Yang <de8cd85960aa1cc8d5791291ab3888c8a6288b2e@jd.com>
Signed-off-by: Shukui Yang <9a53996053cf71010c2d8e90e89a47829095efad@gmail.com>

rhatdan/runc,mikebrow/runc,dqminh/runc,rhatdan/runc,xiaochenshen/runc,kolyshkin/runc,xiaochenshen/runc,mikebrow/runc,dqminh/runc,kolyshkin/runc,opencontainers/runc,kolyshkin/runc,rhatdan/runc,opencontainers/runc,estesp/runc,kolyshkin/runc,mikebrow/runc,dqminh/runc,estesp/runc,xiaochenshen/runc,estesp/runc,rhatdan/runc,opencontainers/runc,dqminh/runc,opencontainers/runc