agnosticbin2: Do not lost buffers during connections
agnosticbin2: Do not lost buffers during connections

If a buffer is received while a reconnection is performed it is
hold until reconneciton is finished.

Change-Id: Idb7f6df9b94ed3a927c93eb5d67b05151fb43faf

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