Fix typo in rsync-auto docs
use global namespace for class IO naming conflict
providers/virtualbox: retry list vms [GH-2831]
Merge pull request #3154 from mway/fix-osx-guest-namespace

guests/darwin: global namespace for class IO naming conflict
Update CHANGELOG
Merge branch 'patch-1' of https://github.com/schlamar/vagrant into schlamar-patch-1

Conflicts:
	CHANGELOG.md
Merge pull request #3145 from Fuhrmann/master

website/docs: Fix typo in rsync-auto docs
website/docs: document provider share impl [GH-3144]
Clarify error message on missing b ox