Add support for AWS ap-east-1 region

[wxdao]

This PR resolves #6832.

It has done 2 things:

• Added ap-east-1[a-e] zones-to-cloud mappings in upup/pkg/fi/cloud.go.
• Updated aws-go-sdk version to 1.19.18, the latest for now, so that aws client's DescribeRegions function can return regions with ap-east-1 correctly.

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[k8s-ci-robot]

Hi @wxdao. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[rdrgmnzs]

/ok-to-test

[mikesplain]

Hey @wxdao! Thanks for your contribution, before we can test or merge this we need you to sign the CLA above. Luckily, once you do this once, you'll able to contribute to any of the kubernetes projects. Let us know if you run into any issues!

[wxdao]

Hey @wxdao! Thanks for your contribution, before we can test or merge this we need you to sign the CLA above. Luckily, once you do this once, you'll able to contribute to any of the kubernetes projects. Let us know if you run into any issues!

Hi mike. I'd like to get CLA ready as soon as possible. However I haven't received its register validation email for hours, not sure if I wrote down a wrong email address or their system glitched. Got no reply from their support yet, looking forward to resolve this soon.

[wxdao]

OK I've signed it.

[mikesplain]

/ok-to-test

[justinsb]

This looks great, thanks you @wxdao

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: justinsb, wxdao

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[justinsb]

I'm guessing we're going to want this cherry-picked back to >= 1.12, possibly even to 1.11