Suffix amazonlinux image with -amazonlinux and push debian image to GitHub

[wongma7]

**Is this a bug fix or adding new feature?**fix

**What is this PR about? / Why do we need it?**To match cloudbuild.yaml https://github.com/kubernetes-sigs/aws-ebs-csi-driver/blob/master/cloudbuild.yaml and in preparation for the next release v0.8.0, amazonlinux based images will be suffixed with -amazonlinux, like v0.8.0-amazonlinux. And debian based images will become the "default" unsuffixed v0.8.0.

At the same time, I noticed crazy-max/ghaction-docker-buildx@v3 was deprecated https://github.com/crazy-max/ghaction-docker-buildx so I rewrote the action to use docker's official github actions.

What testing is done? Not sure if testing is possible? given the extensive rewrite I want to test the new scrijpt but it doesn't seem possible without actually triggering the action. So I will check if the latest tag was successfully pushed after this PR and if not will need a follow-up...

[k8s-ci-robot]

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This pull-request has been approved by: wongma7

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[wongma7]

I don't know if this uses the cache from previous build step ($DEB_BUILD_TAG) . If not, there is no point to $DEB_BUILD_TAG/ $AL2_BUILD_TAG

[ayberk]

Yeah I'm a little bit confused. What's the benefit of build steps?

[wongma7]

makes it quicker to debug what failed. if build succeed but push step failed. etc.

[wongma7]

from local testing the build step image is cached so IMO it makes sense to separate the two steps

[coveralls]

Pull Request Test Coverage Report for Build 1341

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 81.713%

---

Totals
Change from base Build 1338:	0.0%
Covered Lines:	1622
Relevant Lines:	1985

---

💛 - Coveralls

[ayberk]

/lgtm

[k8s-ci-robot]

@ayberk: changing LGTM is restricted to collaborators

In response to this:

/lgtm

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.

[nckturner]

/lgtm

[wongma7]

I don't have permission to restart travis CI, but it is unrelated and not required for merge so I am manually merging.

[wongma7]

The arm build fails, I'll figure it out and send follow up

2020-12-08T18:34:29.7913665Z #8 [linux/arm64 debian-base 2/3] RUN clean-install ca-certificates e2fsprog...
2020-12-08T18:34:29.7914574Z #8 9.250 standard_init_linux.go:219: exec user process caused: exec format error
2020-12-08T18:34:29.9412982Z #8 ...