How to Deploy astfe

1. Build your changes through Jenkins (use the branch name as the build parameter)

2. If your build succeeded, wait for your AMI ID in #tera-test-build (look for astfe-ami-baking). It might take some time until your AMI ID shows up.

3. Clone the repo, change the ami_id line in the following file and make a PR for it

4. As usual, ask your fellow engineer to review and accept the PR

5. After merged, your changes should be automatically deployed.