Configure vp8encoder to use more threads
Configure vp8encoder to use more threads

Change-Id: Iff84e36875f046631e9bfb669c2659c63176ce33

KurentoLegacy/gst-kurento-plugins,shelsonjava/kms-core,shelsonjava/kms-core,KurentoLegacy/gst-kurento-plugins,ESTOS/kms-core,TribeMedia/kms-core,shelsonjava/kms-core,TribeMedia/kms-core,ESTOS/kms-core,TribeMedia/kms-core,TribeMedia/kms-core,Kurento/kms-core,shelsonjava/kms-core,Kurento/kms-core,ESTOS/kms-core,KurentoLegacy/gst-kurento-plugins,ESTOS/kms-core,Kurento/kms-core,KurentoLegacy/gst-kurento-plugins,Kurento/kms-core