mitchellh/packer — pull request #1645 by vtolstov (2014-10-31 13:02:58+00:00)
Title: allow none checksumtype for qemu builder (copy/paste from virtualbox)

Previous commit about disk_image may be used to create vm from another image, but we don't need
to recalculate checksum of already created image. This commit adds 'none' checksum type.

Signed-off-by: Vasiliy Tolstov