tests: enable HTTP digest testing I suppose we could spin the client side extension off to a *.py file if it gets more use. I was basically just looking to avoid killing the server and relaunching it just to change authentication schemes, because that doesn't always work on Windows. The test changes capture the problem with py3.

# See http://EditorConfig.org for the specification

root = true

[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true

[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true

[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false