Fix license test
Adopt a test to pass after after changes in d0ad86f6f9c
The fix for #1856 yields regressions on Linux/OSX so add a switch on Bundler::Windows

See https://github.com/carlhuda/bundler/commit/d6a7c98f948f5f619bfff6ca9b0a72f8f5eda5c4
Merge pull request #2280 from databus23/fix_tests_on_master

Fix tests on master