This breaks my very simple test build... this may be too backwards-incompatible to merge.

{
  "builders": [
    {
      "type": "googlecompute",
      "account_file": "./myproject.json",
      "project_id": "myprojectid",
      "zone": "us-central1-a",
      "source_image": "debian-7-wheezy-v20150127",
      "ssh_username": "root"
    }
  ]
}

It would be great to get this in, but we need to resolve why it breaks the test.

Sorry to be inactive so long. I was trying to figure out the problem, but couldn't yet.
Let me mark this as wip.

I'm going to close this for now since it doesn't seem like it's being actively worked on; if you get a chance to figure out the problem, just open a new one :) . Thanks!

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