Revert to the originl .travis.yml.
Revert to the originl .travis.yml.

The issues wasn't in the build script, it was in the UI where the
environment variables were being set.  Somewhere between the UI and the
builder the variables were being zeroed out, and the fix is to quote them.

mbearup/packer-azure,Azure/packer-azure,mbearup/packer-azure,Azure/packer-azure