kmsutils: Increase keyframe dispersion from 300ms to 1second
kmsutils: Increase keyframe dispersion from 300ms to 1second

Change-Id: I305711918439a16bcc2a4a5fff72e17d778afe32

shelsonjava/kms-core,shelsonjava/kms-core,shelsonjava/kms-core,ESTOS/kms-core,TribeMedia/kms-core,ESTOS/kms-core,Kurento/kms-core,shelsonjava/kms-core,ESTOS/kms-core,Kurento/kms-core,TribeMedia/kms-core,ESTOS/kms-core,TribeMedia/kms-core,Kurento/kms-core,Kurento/kms-core,TribeMedia/kms-core