Relaxing the tenant name requirement. Eliminate the URI format for the tenant...

Relaxing the tenant name requirement. Eliminate the URI format for the tenant property of the CsourceRegistration schema within the NGSI-LD OAS. A tenant name can now be a string. It can still be a URI (string), but this is no longer required (Table 5.2.9-1 CsourceRegistration data type definition - ETSI GS CIM 009 V1.7.1).