Add support for enable_cri_dockerd option

[tsde]

Hello,

Can you please add support for the enable_cri_dockerd option ? This will be required for future version of Kubernetes for people still using docker as their runtime. It can already be enabled if you use Kubernetes 1.21 as stated in RKE documentation:

# Enable running cri-dockerd
# Up to Kubernetes 1.23, kubelet contained code called dockershim 
# to support Docker runtime. The replacement is called cri-dockerd 
# and should be enabled if you want to keep using Docker as your
# container runtime
# Only available to enable in Kubernetes 1.21 and higher
enable_cri_dockerd: true

Thank you

[a-blender]

See test plan for #342 -> #342 (comment).

[Josh-Diamond]

Tested and validated as part of related issue #342 ;
Results found here