disable UWP on arm (#36356)
disable UWP on arm (#36356)

* disable UWP on arm
* build but not test UAP_arm_Release

wtgodbe/corefx,ViktorHofer/corefx,ericstj/corefx,shimingsg/corefx,wtgodbe/corefx,ericstj/corefx,BrennanConroy/corefx,shimingsg/corefx,wtgodbe/corefx,ViktorHofer/corefx,ericstj/corefx,ericstj/corefx,ericstj/corefx,ViktorHofer/corefx,wtgodbe/corefx,BrennanConroy/corefx,ViktorHofer/corefx,ericstj/corefx,wtgodbe/corefx,ericstj/corefx,ViktorHofer/corefx,shimingsg/corefx,shimingsg/corefx,shimingsg/corefx,wtgodbe/corefx,shimingsg/corefx,shimingsg/corefx,wtgodbe/corefx,BrennanConroy/corefx,ViktorHofer/corefx,ViktorHofer/corefx