gstsctpserversrc: Implement query callback
gstsctpserversrc: Implement query callback

Change-Id: I2906b669c07a6f5699abf7cdebd0f96f9e0bded1

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