kmsplayerendpoint: Send a flush after an eos to avoid an error in a next playing
kmsplayerendpoint: Send a flush after an eos to avoid an error in a next playing

Change-Id: I633108931c2750bc5f3c3bdca08971a1cae91c91

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