It generates JSON file in the end with the upload results:
```
{"aws":{"regions":{"eu-central-1":{"arch":{"amd64":{"ami_id":"ami-0f559e06baf488ee1"},"arm64":{"ami_id":"ami-01edd1830a3c5d95c"}}},"eu-west-3":{"arch":{"amd64":{"ami_id":"ami-020f95a280c4c1c55"},"arm64":{"ami_id":"ami-0edcc7d694931a52c"}}}}}}
```
Regions, architectures can be modified as well.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
