Rebase dnsmasq images from busybox to debian-base.

[yuwenma]

Debian-base includes the glibc package.
Changing to debian-base mitigates the CVE issues.

[k8s-ci-robot]

Hi @yuwenma. Thanks for your PR.

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[yuwenma]

/assign @MrHohn
/assign @prameshj

[MrHohn]

/ok-to-test

[MrHohn]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: MrHohn, yuwenma

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