agnosticbin2: Use allowed caps if tee does not have current caps
agnosticbin2: Use allowed caps if tee does not have current caps

Change-Id: Ifeae157e84c08506326866657a0b2a394d2ffc6b

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