preinstall: Add nodelocaldns to supersede_nameserver if enabled

[azuwis]

When a machine that use dhclient and resolvconf reboots, this will make /etc/resolv.conf remain close to the one before reboot

What type of PR is this?
/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

Hi @azuwis. Thanks for your PR.

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[cristicalin]

Thanks for this fix @azuwis !

/ok-to-test
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: azuwis, cristicalin

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[oomichi]

/lgtm