Module Federation Manifest from other Remote

Description of this issue can be found here.

Reproduction

1. Add the following lines to the /etc/hosts on your machine:

127.0.0.1 producer.test
127.0.0.1 consumer.test

1. Call yarn in consumer/ and producer/
2. Call yarn dev in consumer/ and producer/
3. Open consumer.test:2000 in your browser

Expected Behavior

In the Devtools console, "hello from producer" is logged.

Actual Behavior

The request to the mf-manifest.json fails caused by a CORS error.

Further notes

Additional Problem, but not showcased in this repo: If the 3rd party system is behind an authentication, e.g. token stored in cookie, and the user is already authenticated for this system, the request for the mf-manifest.json is missing the cookies of that domain.