kmswebrtcendpoint: generate fingerprint from certificate
kmswebrtcendpoint: generate fingerprint from certificate

Change-Id: I98056d7cff7e877546070c004c7bb1a64bd5a36b

TribeMedia/kms-elements,Kurento/kms-elements,TribeMedia/kms-elements,Kurento/kms-elements,shelsonjava/kms-elements,shelsonjava/kms-elements,Kurento/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements