OCM. Identify federated users

[ScharfViktor]

precondition:

• run two ocis instances ocis-server and federation-ocis-server see here https://owncloud.dev/ocis/development/testing/#running-test-suite-with-federated-sharing-ocm

Steps:

• create federation connection between admin(ocis-server) and marie(federation-ocis-server)
• admin searches users by mar in the Share with people dialog

Actual: admin gets two marie users. but we cannot identify which one is the federated user

Expected: federated user has different icon