tyr: add configuration for minium duration of bss in destineo
destineo: add a minimum duration for the bss fallback
tyr: set the default value for "destineo_min_bike" at 4 minutes

This will only change the value for newly created instance.
With 5 minutes there was something like 200 meters that was not covered
by the walk and the bike.
Merge pull request #751 from kinnou02/destineo_min_bss

minimum duration of bss for destineo