Fix VPC issue in build packer job failures

Description

The build-packer job has been failing since Aug 30 with the following error:

Here is a link to the first offending build (I have clicked 'keep this build forever'): https://build.testeng.edx.org/job/build-packer-ami/14447/

Steps to Reproduce

None

Current Behavior

None

Expected Behavior

None

Reason for Variance

None

Release Notes

None

User Impact Summary

None
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Assignee

Unassigned

Reporter

Stuart Young