This commit normalizes our Windows paths to use `/` instead of `\`.
These paths are compatible with both cmd and PowerShell, and are
required if the server-side shell is set to Bash.
The OpenSSH server executes all commands inside a default login shell
which cannot be controlled by the Vagrant configuration. So what ends up
getting executed on the server side looks something like this:
"c:\\program files\\git\\bin\\bash.exe" -c "C:\\Windows\\Temp\\vagrant-ssh20200130-41670-1w5nsjy.bat"
By flipping the direction of the directory slashes, we end up with:
"c:\\program files\\git\\bin\\bash.exe" -c "C:/Windows/Temp/vagrant-ssh20200130-43415-f1d5n2.bat"
This works whether the server-side shell is set to cmd, powershell, or
bash.
Windows commands that run over SSH are wrapped in a script that writes a
special marker to the two output streams (stdout and stderr). This
allows Vagrant to consume the output streams.
Unfortunately, this leads to a sort of chicken-and-egg problem where no
commands can be run before a wrapper script exists. For example, you
can't make a destination directory to upload the wrapper script without
first creating a wrapper script to make the directory. :)
This commit changes the behavior of the WinSSH communicator to assume
that the destination directory already exists for provisioning scripts.
It also moves the default `upload_path` from the shell provisioner
config so we can have OS-specific defaults.
Finally, it introduces a Windows-specific #upload method which will
properly use a Windows path separator on a non-Windows host.
This commit creates a custom `read_dhcp_servers` method in the
VirtualBox 6.1 driver to handle changes made in the ouput of
`VBoxManage list dhcpservers`.
Tests for VirtualBox 6.1+ can no longer use the shared examples for the
VirtualBox 4.x driver, because the `read_dhcp_servers` change is not
backwards compatible.
This commit also creates the boilerplate for a VirtualBox 6.x shared
example in case we want to put tests there in the future.
This commit moves out the recovery steps for failures when Vagrant
attempts to resize disks. It wraps itsemf in a begin/rescue in case an
additional error occurs, we can still surface the original error that
caused the resizing to fail.
This commit adds some recovery if Vagrant fails to reattach or clone a
vmdk disk that needs to be resized. It first moves the original disk
(after cloning) to a backup file. If something fails, it will reattach
the original disk to the guest and continue to raise the exception.
This commit ensures that vagrant attaches a new disk to the _next
available_ port, rather than the last one "used". This can occur if a
disk has been removed in a previous run, leaving a port open
