Make the macOS worker type configurable
Make the macOS worker type configurable

KiChjang/servo,splav/servo,KiChjang/servo,DominoTree/servo,KiChjang/servo,DominoTree/servo,DominoTree/servo,KiChjang/servo,DominoTree/servo,DominoTree/servo,splav/servo,KiChjang/servo,KiChjang/servo,splav/servo,KiChjang/servo,KiChjang/servo,DominoTree/servo,KiChjang/servo,splav/servo,KiChjang/servo,splav/servo,DominoTree/servo,DominoTree/servo,splav/servo,DominoTree/servo,splav/servo,splav/servo,splav/servo,splav/servo,DominoTree/servo