ci: set pipefail in zuul script
ci: set pipefail in zuul script

Otherwise the exit code is always 0

Signed-off-by: Shengjing Zhu <2dd997cfa01a89f57dd2ea7f2dd61043cc88e07b@debian.org>

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