Fixed issue 3987

Reboot the Windows guest after renaming the computer so changes take affect immediately before attempting to provision the box.

- Changed rename from wmic to netdom since netdom seems to work correctly in Windows 2008R2 and newer OSs.
- Fixed Windows guest error translations, the wrong namespace was specified in the yaml file.
Merge pull request #4006 from mitchellh/fix-issue-3987

guests/windows: reboot after hostname change