Added Amazon ECR Credential Helper

[yashsingh74]

This PR aims to add the amazon ECR credential helper.

[prowtce]

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[yashsingh74]

Please check and review.
I also need the following information <aws_account_id> and to be added in the run.sh file.

Q. Is it ok to add the AWS Account ID publicly open in the run.sh?

[rajaskakodkar]

Left some comments otherwise lgtm. Also, lets try this locally before updating the job.

[rajaskakodkar]

Can you please add this inside the if [[ "${REGISTRY_ENABLED}" == "true" ]]; then block?

[rajaskakodkar]

I wonder if this is required based on https://github.com/awslabs/amazon-ecr-credential-helper#docker

[yashsingh74]

I removed the credHelpers. It is not needed for pull and push for docker images.

[rajaskakodkar]

Q. Is it ok to add the AWS Account ID publicly open in the run.sh?

I think it should be ok, however, I wonder if we will require it for public ECR.

[rajaskakodkar]

Lets merge this post infra migration.

/hold

[rajaskakodkar]

https://github.com/awslabs/amazon-ecr-credential-helper#troubleshooting mentions that logs can be captured in ~/.ecr/log. I think it'd be cool to push these logs as part of prow $ARTIFACTS. However, we need to verify that the logs are clean.