Mongodb/pim 1686

Bug fix: [no]
Feature addition: [no]
Backwards compatibility break: [yes] (no mapping from Group to Product)
Unit test passes: [yes]
Behat scenarios passes: [yes]
Checkstyle issues: [no]
ChangeLog updated: [yes]
Documentation PR: [N.A.]
Fixes the following jira:
mongodb/PIM-1686