* Toolcache: add basic error handling in Windows toolcache provisioner
* Toolcache: add GITHUB_FEED_TOKEN into packer templates for Windows
* Toolcache: separate toolcache.json for Windows
* Rework "Validate-ToolCache" script (#6)
* Rework validate toolcache script
* change boost root folder
* Add boost 1.69 for windows-2019
* Add toolcache config variable to Windows 16, 19
* Revert "Add toolcache config variable to Windows 16, 19"
* Add default boost version for validate-boost VS19
* Remove bjam test for boost
* Add boost 1.72 validation for win-2016
Co-authored-by: MaksimZhukov <[email protected]>
Co-authored-by: Aleksandr Chebotov <[email protected]>
