update cluster/dns/coredns to 1.8.0 as kubeadm

[pacoxu]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

#96429 use 1.8.0 in kubeadm of 1.21
So I think we should upgrade the coredns image here as well.

Which issue(s) this PR fixes:

part of #99751

Special notes for your reviewer:

Does this PR introduce a user-facing change?

None

[k8s-ci-robot]

@pacoxu: This issue is currently awaiting triage.

If a SIG or subproject determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[BenTheElder]

/home/prow/go/src/k8s.io/kubernetes
INFO Validating zeitgeist options...              
ERRO /home/prow/go/src/k8s.io/kubernetes/build/dependencies.yaml indicates that coredns-kube-up should be at version 1.7.0, but the following files didn't match: cluster/addons/dns/coredns/coredns.yaml.base, cluster/addons/dns/coredns/coredns.yaml.in, cluster/addons/dns/coredns/coredns.yaml.sed 
FATA Dependencies are not in sync                 
+++ exit code: 1
+++ error: 1
FAILED   verify-external-dependencies-version.sh	40s
Verifying verify-vendor-licenses.sh

it's expected that kube-up and kubeadm are both updated for better coverage in CI

[pacoxu]

@BenTheElder I updated the coredns-kube-up part.

kubeadm has already used 1.8.0.

for new released 1.8.3, I may work on the corefile-migration first.

[rajansandeep]

Hi @pacoxu, thank you for picking this up.
Can you also update the corefile-migration tool to v1.0.11 in https://github.com/kubernetes/kubernetes/blob/master/cluster/gce/upgrade.sh#L485-L526

[pacoxu]

@rajansandeep Updated.

Is there any update for the corefile?

[pacoxu]

/assign @bowei @cblecker

[MrHohn]

/approve

[MrHohn]

/lgtm
for the addon changes.

[BenTheElder]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BenTheElder, MrHohn, pacoxu

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• build/OWNERS [BenTheElder]
• cluster/addons/dns/OWNERS [BenTheElder,MrHohn]
• cluster/gce/OWNERS [BenTheElder]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment