dhry: change tash command executed type
dhry: change tash command executed type

While the example is running in the background, change it to ASYNC so
that the user can use other commands.

Change-Id: I87976bdcedf370741cbb02d6b678007fc1b6e3e0
Signed-off-by: Junhwan Park <7fee488b6f78fc50b291ffc7d10428788977e877@samsung.com>

JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT,JunhwanPark/TizenRT