* refactor: enterprise dependencies for EdxRestAPIClient replacement
This is a part of https://github.com/openedx/public-engineering/issues/42
- add settings for enterprise-backend-service DOT application
- update utils used by enterprise to get rid of EdxRestAPIClient
- original utils stays in the code (to keep edx-platform api
clients working) till the
https://github.com/openedx/public-engineering/issues/39 deprecation
work will be done
* fix: fix typo in the docstring