add some option descriptions to generated build.yml
add some option descriptions to generated build.yml

rhomobile/rhodes,watusi/rhodes,watusi/rhodes,rhomobile/rhodes,watusi/rhodes,rhomobile/rhodes,tauplatform/tau,rhomobile/rhodes,tauplatform/tau,rhomobile/rhodes,tauplatform/tau,watusi/rhodes,rhomobile/rhodes,tauplatform/tau,tauplatform/tau,watusi/rhodes,watusi/rhodes,tauplatform/tau,rhomobile/rhodes,watusi/rhodes,tauplatform/tau,rhomobile/rhodes,watusi/rhodes,rhomobile/rhodes,tauplatform/tau,watusi/rhodes,tauplatform/tau,tauplatform/tau,watusi/rhodes,rhomobile/rhodes