Add ctr c info --spec flag to output spec
Add ctr c info --spec flag to output spec

This flag makes it easy to view only the OCI spec for the container.

Signed-off-by: Michael Crosby <951f4c7b5d47e32d0112c78d14a98eaa23e6b5ef@gmail.com>

mikebrow/containerd,thaJeztah/containerd,crosbymichael/containerd,containerd/containerd,vdemeester/containerd,crosbymichael/containerd,mikebrow/containerd,estesp/containerd,estesp/containerd,thaJeztah/containerd,dmcgowan/containerd,dmcgowan/containerd,vdemeester/containerd,containerd/containerd