* [macOS] Fail Pester tests on error
* return it back
* added new tests
* added new tests for Macos part2
* fixed nitpicks
* vsmac changes
* remove toolcache fron high sierra
* set -e and fix all the scripts
* add source utils to finalize_vm script
* change xcode version in postbuild script
* fix for softwareupdates and for xcode version