…ching (#478)

* adds generic test for external api call error suppression under the  service users profiles spec

* adds dedicated mailchimp api call fails test for partner access service - requires some extra mocking and minor reorganisation

* adds dedicated crisp and mailchimp api call fail tests for create and update user

* make sure to await the calls on service user profile methods (probably was not an issue in production but under test the runs could complete before mocked methods were called)

* remove the awaits