Amazon Import Post Processor Fails

_This issue was originally opened by @jeremymcgee73 as hashicorp/packer#10873. It was migrated here as a result of the [Packer plugin split](https://github.com/hashicorp/packer/issues/8610#issuecomment-770034737). The original body of the issue is below._

#### Overview of the Issue

I am having a problem when I am using the Amazon Import post processor after building an ova with vmware-iso. This error does not happen every time, just seems to be random. I am setting AWS_POLL_DELAY_SECONDS=30 before running packer.

### Packer version

1.70

### Operating system and Environment details

RHEL 7.8
VMware Workstation 15

### Log Fragments and crash.log files

==> vmware-iso.windows-base: Exporting virtual machine...
vmware-iso.windows-base: Executing: ovftool
==> vmware-iso.windows-base: Running post-processor: (type shell-local)
==> vmware-iso.windows-base (shell-local): Running local shell script: /packer/packer-shell731403097
==> vmware-iso.windows-base: Running post-processor: (type amazon-import)
vmware-iso.windows-base (amazon-import): Uploading 2019.ovaa to s3://NOT-REAL-BUCKET/packer-import-1617712990.ova
vmware-iso.windows-base (amazon-import): Completed upload of 2019.ovaa to s3://NOT-REAL-BUCKET/packer-import-1617712990.ova
vmware-iso.windows-base (amazon-import): Setting license type to 'AWS'
vmware-iso.windows-base (amazon-import): Started import of s3://NOT-REAL-BUCKET/packer-import-1617712990.ova, task id import-ami-007c4145c618ddcd6
vmware-iso.windows-base (amazon-import): Waiting for task import-ami-007c4145c618ddcd6 to complete (may take a while)
Build 'vmware-iso.windows-base' errored after 1 hour 26 minutes: 1 error(s) occurred:
* Post-processor failed: Import task import-ami-007c4145c618ddcd6 failed with status message: ClientError: The specified S3 resource does not exist. Reason 404 Not Found, error: ResourceNotReady: failed waiting for successful resource state