add Google proxy-mirror-cache for docker hub to CI tests

[LuckySB]

/kind failing-test

What this PR does / why we need it:

CI test failed due docker hub pull limit.
add Google registry proxy-mirror

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[LuckySB]

Public Google doesn't work as expected

Images missing in the mirror are not pumped out, but an error is returned

Nov 27 11:40:37 dev-kube-jump dockerd: time="2020-11-27T11:40:37.123495051+03:00" level=debug msg="Trying to pull nginx from https://mirror.gcr.io/ v2"
Nov 27 11:40:37 dev-kube-jump dockerd: time="2020-11-27T11:40:37.651488312+03:00" level=info msg="Attempting next endpoint for pull after error: manifest unkn
own: Failed to fetch \"1.18\" from request \"/v2/library/nginx/manifests/1.18\"."
Nov 27 11:40:37 dev-kube-jump dockerd: time="2020-11-27T11:40:37.651558174+03:00" level=debug msg="Trying to pull nginx from https://registry-1.docker.io v2"

Need second own docker registry mirror, runned on CI servers
@Miouge1 Please see #6959

[floryut]

Ok so do we still need this PR ? We've removed most dockerhub images and if the remaining aren't in mirror.gcr.io then there is no real use, isn't it ?

[LuckySB]

yes. this PR is need.
Also need add support registry mirror to containerd and crio CRI.

docker hub images:
grep docker_image_repo roles/download/defaults/main.yml
I don't understand how they can be removed

[LuckySB]

and now mirror.gcr.io has an image nginx:1.19, on the pull of which CI tasks broke yesterday

So mirror.gcr.io add images asynchronously

[floryut]

and now mirror.gcr.io has an image nginx:1.19, on the pull of which CI tasks broke yesterday

So mirror.gcr.io add images asynchronously

Ok that's good then ! Thanks @LuckySB
And yes what I meant is that we removed a lot of dockerhub references, but for some (weave, dashboard etc..) dockerhub is the only source so mirroring/private rep is the only choice

[floryut]

Let's merge this then!
/lgtm