kmssdpagent: Do not answer to media with port set to zero
kmssdpagent: Do not answer to media with port set to zero

Change-Id: I1a10a87bd1077cdd993ef7ad9369b094ee4fb7c7

Kurento/kms-core,Kurento/kms-core,ESTOS/kms-core,ESTOS/kms-core,ESTOS/kms-core,Kurento/kms-core,Kurento/kms-core,ESTOS/kms-core