basertpendpoint: Improve rtp stats file name
basertpendpoint: Improve rtp stats file name

Change-Id: Ib82b0dcc0fa49b390d64e7b688094411fd3c0618

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