builder/parallels: Add mock for "SetDefaultConfiguration" method

Fixes unit test failures

Parallels: Apply default settings on the VM creation step.

This functions applies the default configuration to the virtual machine. Also, it disables some integration features
which should not present in the resulted VM image.

Functions are different in PD 9 and 10 structs because some additional options appeared only in Parallels Desktop 10 release.

remove image format from image name in qemu builder

builder/google: Adds support for using the internal IP rather than NAT IP in GCE

builder/amazon-chroot: Only unmount if path is actually mounted

builder/qemu: Force qemu to use a VNC port by setting vnc_min_port == vnc_max_port

Similar to Issue #1288, this prevents a crash when we set the VNC
minimum port equivalent to the VNC maximum port

communicator/ssh: support for bastion SSH

Windows provisioners: powershell, windows-shell, windows-restart

provisioner/puppet-masterless: only base if manifest is a file [GH-1933]

Add quickfix to restart provisioner as existing one was not working.

For more information read https://github.com/mitchellh/packer/pull/2243

packer: HookProvision errors if no communicator

website: adds missing comma

The `parallels_tools_flavor` key-value pair is missing a trailing comma, thereby making it invalid JSON.