Vagrant 2.2.7

What's new in this version:

Improvements:
- Guest/opensuse: Check for basename hostname prior to setting hostname
- Host/linux: Check for modinfo in /sbin if it's not on PATH
- Core: Show guest name in hostname error message
- Provisioners/shell: Linux guests now support reboot option
- Darwin/nfs: Put each NFS export on its own line
- Contrib/bash: Add more completion flags to up command
- Provider/virtualbox: Add VirtualBox provider support for version 6.1.x
- Box/outdated: Allow to force check for box updates and ignore cached check
- Guest/alpine: Update apk cache when installing rsync
- Provider/virtualbox: Improve error message when machine folder is inaccessible
- Provisioner/ansible_local: Add pip install method for arch guests
- Communicators/winssh: Use Windows shell for vagrant ssh -c

Bug Fixes:
- Command/snapshot/save: Fix regression that prevented snapshot of all guests in environment
- Core: Update UI to properly retain newlines when adding prefix
- Core: Check if box update is available locally
- Core: Ensure Vagrant::Errors are loaded in file_checksum util
- Cloud/publish: Improve argument handling for missing arguments to command
- Core: Get latest version for current provider during outdated check
- Linux/nfs: avoid adding extra newlines to /etc/exports
- Guest/darwin: Fix VMware synced folders on APFS
- Guest/redhat: Ensure nfs-server is restarted when installing nfs client
- Core: Do not validate checksums if options are empty string
- Provider/docker: Enhance docker build method to match against buildkit output
- Provisioner/ansible_local: Don't prompt for input when installing Ansible on Ubuntu and Debian
- Provisioner/ansible_local: Ensure all guest caps accept all passed in arguments
- Host/windows: Fix regression that prevented port collisions from being detected
- Core/provisioner: Set top level provisioner name if set in a provisioner config