Annotation @odata.id must be present if entity's key fields are omitted from the response

Per [1], The odata.id annotation MUST appear in responses if odata.metadata=full is requested, or if odata.metadata=minimal is requested and any of the entity's key fields are omitted from the response or the entity-id is not identical to the canonical URL of the entity after

Olingo serializer does NOT honor this.

[1] http://docs.oasis-open.org/odata/odata-json-format/v4.0/errata02/os/odata-json-format-v4.0-errata02-os-complete.html#_Toc403940621