Ensure we generate version prop before sync parallel build
Ensure we generate version prop before sync parallel build

We need to generate the buildversion props file before we start
a parallel build otherwise we race condition that can break
the build.

wtgodbe/corefx,wtgodbe/corefx,ViktorHofer/corefx,ericstj/corefx,Jiayili1/corefx,ericstj/corefx,mmitche/corefx,Jiayili1/corefx,ptoonen/corefx,mmitche/corefx,ViktorHofer/corefx,wtgodbe/corefx,BrennanConroy/corefx,ViktorHofer/corefx,ericstj/corefx,shimingsg/corefx,Jiayili1/corefx,ptoonen/corefx,ptoonen/corefx,wtgodbe/corefx,ptoonen/corefx,BrennanConroy/corefx,mmitche/corefx,ViktorHofer/corefx,ptoonen/corefx,mmitche/corefx,Jiayili1/corefx,mmitche/corefx,ericstj/corefx,Jiayili1/corefx,ViktorHofer/corefx,Jiayili1/corefx,shimingsg/corefx,wtgodbe/corefx,shimingsg/corefx,ViktorHofer/corefx,Jiayili1/corefx,wtgodbe/corefx,ericstj/corefx,mmitche/corefx,ericstj/corefx,shimingsg/corefx,mmitche/corefx,ViktorHofer/corefx,ericstj/corefx,shimingsg/corefx,ptoonen/corefx,ptoonen/corefx,shimingsg/corefx,BrennanConroy/corefx,shimingsg/corefx,wtgodbe/corefx