node: Move dockershim tests to their own job

[endocrimes]

This commit excludes Dockershim tests from the Serial job and moves them
to their own job. This is ahead of dockershim support being removed from
the kubelet to help clean up test flakiness.

/sig node
/cc @SergeyKanzhelev @dims

[ehashman]

Can we please also update the periodics to split?

[endocrimes]

/retest

[endocrimes]

@ehashman updated

[dims]

/approve

will leave lgtm for @SergeyKanzhelev or @ehashman

[SergeyKanzhelev]

thank you!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dims, endocrimes, SergeyKanzhelev

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[k8s-ci-robot]

@endocrimes: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

• key node-kubelet.yaml using file config/jobs/kubernetes/sig-node/node-kubelet.yaml
• key sig-node-presubmit.yaml using file config/jobs/kubernetes/sig-node/sig-node-presubmit.yaml

In response to this:

This commit excludes Dockershim tests from the Serial job and moves them
to their own job. This is ahead of dockershim support being removed from
the kubelet to help clean up test flakiness.

/sig node
/cc @SergeyKanzhelev @dims

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