tests: Use path found to containerd.
tests: Use path found to containerd.

After check if containerd is intalled the command executed using sudo,
/usr/local/bin may not been in sudo secure_path, save the path where
containerd was installed and use it.

Signed-off-by: Jose Carlos Venegas Munoz <821ab150128e889cb3ad9aab6e72689fd9ad26f2@intel.com>

estesp/containerd,containerd/containerd,thaJeztah/containerd,mikebrow/containerd,mikebrow/cri-containerd,mikebrow/cri-containerd,thaJeztah/containerd,containerd/containerd,mikebrow/cri-containerd,estesp/containerd,mikebrow/containerd,vdemeester/containerd,dmcgowan/containerd,dmcgowan/containerd,vdemeester/containerd