Honor bootstrap_version:
1. Original patch(From https://github.com/opscode/knife-windows/pull/30/commits )
2. Rspec-based unit test
Explicitly load the template file
Fix unit test break caused by incorrect template path in test
Merge pull request #44 from opscode/adamed-OC-5899-distro

OC-5899: Honor chef-client version flag on windows bootstrap command line