mitchellh/vagrant — pull request #2917 by tmatilai (2014-01-31 04:49:04+00:00)
Title: Detect and install `rsync` to the guest if needed

Automatically install `rsync` to the guests if needed and not found (similar to the NFS client). Installation supported by Debian and RHEL based Linux distros, and by FreeBSD, NetBSD, and OpenBSD.

Also copy `rsync_pre` capability to all Unix guests.