OCM. Prevent federated users from being added as members of the space

[ScharfViktor]

Version 6.3.0 web 10.2.0

ocm setup, see here https://owncloud.dev/ocis/development/testing/#running-test-suite-with-federated-sharing-ocm

Steps:

• user creates space and tries to add external user as member

Expected: 403 Forbidden Actual: curl -k -X POST 'https://ocis-server:9200/graph/v1beta1/drives/space_uuid/root/invite' -u admin:admin -d '{"roles":["a8d5fe5e-96e3-418d-825b-534dbdf22b99"],"recipients":[{"objectId":"external_user_uuid: ","@libre.graph.recipient.type":"user"}]}' -v

gets 200 OK - but user hasn't access to space

[2403905]

Related issue https://github.com/owncloud/web/issues/11579

[ScharfViktor]

need also prevent adding members to space using "https://ocis-server:9200/graph/v1beta1/drives/spaceUUID/items/spaceUUID/invite" endpoint added test apiOcm/share.feature:231 and linked issue

https://github.com/owncloud/ocis/pull/10166