Only specify dockershim options when container runtime is not containerd.
Those options were ignored in the past when using containerd but since 1.24
kubelet refuses to start.
Task: 45282
Story: 2010028
Signed-off-by: Daniel Meyerholt <dxm523@gmail.com>
Change-Id: Ib44cc30285c8bd4219d4a45dc956696505ddd570