Convert Events-test to Events prod

[qifeng-bai]

Work logs / issues:

Deployed the production Events-UI. All functions work, but downloading request failed.

• Downloading requests point to a new API GW endpoint (production)

Investigations:

• the request denied by API GW, (500 error) , the Lambda service behind was not triggered.
• Redeployed the test Events-UI package, the downloading has the same issue.
• Switch the current API GW back to the old one (backup)
• Request passed through the API GW
• The Lambada service was triggered

• Events-test received confirmation email.

  Suspect some issues with our backend downloading process

Current: Redeployed the production version and use the backup API GW. All function work.

Ongoing work: Check the new downloading API GW endpoint configs