Mary Church Terrell BagIt export fails

[lalgee]

What behavior did you observe? Please describe the bug
The Mary Church Terrell export times out in production as well as test. A 504 error eventually loads. The bag does not download and a new bag is not created in AWS.

How can we reproduce the bug?
Steps to reproduce the behavior:

1. Go to Django Admin
2. Go to Campaigns
3. Click on Mary Church Terrell
4. Click EXPORT BAGIT
5. See error

What is the expected behavior?
After clicking the EXPORT BAGIT button a .zip file containing all campaign transcription TXTs and metadata should download.

[jkueloc]

#1503 captures (I think) the initial ticket for the issue (http 504 timeouts on bag-it exports) which mentions the existing workaround to run the process in a local development environment.

[jkueloc]

This export has been completed using the known local dev env workaround with a fresh dmp from production. The zip can be found in the S3 bucket crowd dev export.