Send event downstream to request a new key frame when valves are opened
Send event downstream to request a new key frame when valves are opened

Change-Id: Id80b60d38ca97ca9d93c6083d10f3626a682b56f

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