[sudo-workers] Fixes to sudoers2ldif

[Todd C. Miller]

On Tue, 02 Feb 2016 11:21:10 -0800, Aaron Peschel wrote:

> * Fixes documented bug with duplicate role names.
> * Parses assignments preceded by "Default" tag to eliminate whitespace.
>   * (Not documented in script, but documented in this mail list.)
> * Replaces leading tabs with spaces, for consistency.

There was already a fix for whitespace around Defaults entries which
also parses += and -= assigments so I only merged the duplicate
role name fix.  Thanks!

https://www.sudo.ws/repos/sudo/rev/344a1c1f5c93

 - todd