* [builder/azure-arm] Use VM/build location for image locationThe builder was using the location of the containing resource group asthe image location, but the API call can only create images in the samelocation as the source VM that is being captured.
This is last merge that will happen from the github.com/Azure/packer-Azure
repository. All development is being over to this repository.
The biggest change in this merge is support for Windows. There are a few other
fixes as well.
* If the user cancels the build, clean up any resources.
* Output a reasonable build artifact.
* Log requests and responses with Azure.
* Support for US Government and the China clouds.
* Support interrupting long running tasks.
* Allow the user to set the image version.
* Device login support.