Summary:
somehow the windows-server-2019-vs2019 image changed in a way that made
VS 14 2015 the default. This caused an error when we specify VS 16 2019
as the cmake generator. I could not figure out the right arguments/env
vars to get the latest VS working so pinned the image to the previous
version instead.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6876
Reviewed By: pdillinger
Differential Revision: D21709679
Pulled By: ajkr
fbshipit-source-id: 2d16819ad239b4611fa199547744e1c101dc9da0