Summary:
* Clearer indication of which versions of msbuild and Visual Studio is used
* Explicit naming of the build jobs within the Windows workflows
Pull Request resolved: https://github.com/facebook/rocksdb/pull/7852
Reviewed By: akankshamahajan15
Differential Revision: D25864444
Pulled By: jay-zhuang
fbshipit-source-id: 0d618ad8a8892d5a2575cdfaa59d61a989c4df4b