bumped latest stable buildroot version to recently released 2017.02.1
bumped latest stable buildroot version to recently released 2017.02.1

jens-maus/RaspberryMatic,jens-maus/RaspberryMatic,jens-maus/RaspberryMatic,jens-maus/RaspberryMatic,jens-maus/RaspberryMatic,jens-maus/RaspberryMatic