Bump GCI to gci-stable-56-9000-84-2 on release-1.5

[freehan]

Manual cherry-pick of #41819

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

The following people have approved this PR: freehan

Needs approval from an approver in each of these OWNERS Files:

• cluster/gce/OWNERS
• cluster/kubemark/OWNERS
• test/e2e_node/OWNERS

We suggest the following people:
cc @gmarek @timstclair
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[k8s-reviewable]

This change is 

[freehan]

I noticed that kubemark in 1.5 branch is not using gci image as master. Not sure what is the reason behind it. I change it to match the config of master.

[dchen1107]

I think this should be fine, especially on HEAD, it is switched to GCI / COS already. cc/ @gmarek @wojtek-t for confirmation.

[dchen1107]

/lgtm and
/appove

cc/ @saad-ali the release czar

[saad-ali]

+@mwielgus the new 1.5 release branch manager: This is worth keeping a close eye on. After the previous GCI image update, a bunch of 1.5 CI broke.

[freehan]

@k8s-bot unit test this
@k8s-bot kubemark e2e test this

[freehan]

adding labels based on #41828 (comment)

[freehan]

@k8s-bot kubemark e2e test this

[freehan]

@k8s-bot kubemark e2e test this

[freehan]

Looks like kubemark in 1.5 is not compatible with GCI image. Will switch back to use CVM for master

W0222 11:15:28.930] mkdir: cannot create directory '/srv': Read-only file system
W0222 11:15:28.986] !!! Error in ./test/kubemark/start-kubemark.sh:150
W0222 11:15:28.987]   'gcloud compute ssh --zone="${ZONE}" --project="${PROJECT}" "${MASTER_NAME}" --command="sudo mkdir /srv/kubernetes -p &&     sudo bash -c \"echo ${MASTER_CERT_BASE64} | base64 --decode > /srv/kubernetes/server.cert\" &&     sudo bash -c \"echo ${MASTER_KEY_BASE64} | base64 --decode > /srv/kubernetes/server.key\" &&     sudo bash -c \"echo ${CA_CERT_BASE64} | base64 --decode > /srv/kubernetes/ca.crt\" &&     sudo bash -c \"echo ${KUBECFG_CERT_BASE64} | base64 --decode > /srv/kubernetes/kubecfg.crt\" &&     sudo bash -c \"echo ${KUBECFG_KEY_BASE64} | base64 --decode > /srv/kubernetes/kubecfg.key\" &&     sudo bash -c \"echo \"${KUBE_BEARER_TOKEN},admin,admin\" > /srv/kubernetes/known_tokens.csv\" &&     sudo bash -c \"echo \"${KUBELET_TOKEN},kubelet,kubelet\" >> /srv/kubernetes/known_tokens.csv\" &&     sudo bash -c \"echo \"${KUBE_PROXY_TOKEN},kube_proxy,kube_proxy\" >> /srv/kubernetes/known_tokens.csv\" &&     sudo bash -c \"echo ${password},admin,admin > /srv/kubernetes/basic_auth.csv\""' exited with status 1
W0222 11:15:28.987] Call stack:
W0222 11:15:28.987]   1: ./test/kubemark/start-kubemark.sh:150 main(...)
W0222 11:15:28.987] Exiting with status 1

[freehan]

@k8s-bot test this

[freehan]

@k8s-bot cross build this
@k8s-bot kubemark e2e test this
@k8s-bot aws e2e test this
@k8s-bot non-cri node e2e test this

[k8s-github-robot]

Automatic merge from submit-queue

[k8s-cherrypick-bot]

Commit found in the "release-1.5" branch appears to be this PR. Removing the "cherrypick-candidate" label. If this is an error find help to get your PR picked.