Add source_path to vagrant-cloud post-processor

[genebean]

I like to build and test vagrant boxes locally before uploading them anywhere. With that in mind, I would like to have a setting like the source_path one builders have in the vagrant-cloud post-processor so that after testing I could run packer again, point it at the boxes created earlier, and have it upload them. The upload template would look something like this:

{
  "variables": {
    "box_tag": "genebean/somebox",
    "cloud_token": "{{ env `VAGRANT_CLOUD_TOKEN` }}",
    "version": "{{ env `VAGRANT_BOX_VERSION`}}"
  },
  "post-processors": [
    {
      "type": "vagrant-cloud",
      "source_path: "boxes/somebox.box",
      "keep_input_artifact": true,
      "box_tag": "{{user `box_tag`}}",
      "access_token": "{{user `cloud_token`}}",
      "version": "{{user `version`}}"
    }
  ]
}

[ndench]

Even if there was a flag to skip the vagrant-cloud post-processor would solve the problem too, as detailed in #2679. That way you could skip it and test the box locally then rebuild without skipping vagrant-cloud. Only problem is it would have to rebuild the whole box which would be slow (not something I'm worried about because I get CircleCI to build and push to Vagrant Cloud when I push to the master branch).

[SwampDragons]

I added this to the 1.3.4 milestone so that I would remember to take a look at it, but I think that I'm going to close as wontfix. My reasoning here is that if you're planning to post-process separately from the build, it's better to just use the vagrant-cloud cli for uploads.

That said, we are adding the ability to "skip" post-processors using the "-except" flag in the next release, v1.3.4, so you'll be able to use @ndench's workaround if you're really determined.

[ghost]

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