push images to public ecr

[brycahta]

Issue #, if available:

• We are not currently publishing images to public ECR

Description of changes:

• Brought over Brandon's NTH ECR changes to AEMM
• Added functionality to draft-release-notes to markdown the PR links for cross posting

Output of draft-release-notes:

  - push images to public ecr (thanks to Bryan™️)
  - make fmt [#113](https://github.com/aws/amazon-ec2-metadata-mock/pull/113) (thanks to Brandon Wagner)
  - remove CLA [#114](https://github.com/aws/amazon-ec2-metadata-mock/pull/114) (thanks to Brandon Wagner)
  - Update types.go [#112](https://github.com/aws/amazon-ec2-metadata-mock/pull/112) (thanks to Julian Martinez)
  - fix docker login commands for gh actions [#111](https://github.com/aws/amazon-ec2-metadata-mock/pull/111) (thanks to Brandon Wagner)
  - pr template [#110](https://github.com/aws/amazon-ec2-metadata-mock/pull/110) (thanks to Brandon Wagner)
  - gh actions [#109](https://github.com/aws/amazon-ec2-metadata-mock/pull/109) (thanks to Brandon Wagner)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[bwagner5]

Can you update the helm chart readme for the docker image repo too?

Everything else looks great!

[bwagner5]

👍