core: set default server URL
website/www: add hyper-v preview image
website/www: Hyper-V blog post
core: use default color by default (not white)
core: rescue version conflicts when setting up Bundler
core: packaging works again
guests/redhat: force remove files so it works with pty
providers/hyperv: add test for windows guests
providers/hyperv: validate IP address returned [GH-3069]
synced_folders/smb: set recursive ACL for folders
core: initialize synced folder class only once [GH-3067]
synced_folders/smb: ask for creds in prepare
Merge pull request #3068 from MSOpenTech/driver-methods

provider/hyperv: move to Driver based model
providers/hyperv: update driver stuff
Fix Hyper-V tests
core: the provision sentinel should be backwards compatible
providers/hyperv: public_address cap
providers/hyperv: fix the class name
synced_folders/rsync: allow custom args [GH-3070]
synced_folders/rsync: rsync__auto options