strand: support them in future, signal, periodictask and async

Change-Id: I219d64fe616e1fc6e7729a1dc2899e5e1c5251a0
Reviewed-on: http://gerrit.aldebaran.lan/45736
Reviewed-by: pdaouadi <pdaouadi@aldebaran-robotics.com>
Tested-by: pdaouadi <pdaouadi@aldebaran-robotics.com>