Add default runtime and runtimes fields in the docker config

[bharath-123]

Add the capability of defining the default runtime and runtimes fields for the docker daemon used in kops nodes.

This fixes #10127

[k8s-ci-robot]

Hi @bharath-123. Thanks for your PR.

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[bharath-123]

/cc @hakman

[bharath-123]

@hakman this seems alright i suppose?

[hakman]

/ok-to-test
/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bharath-123, hakman

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