Cannot configure .NET agent logFileDirectory

With the changes by @akemner to remove `setup.xml`, it is no longer possible to change the `logFileDirectory`. This setting is only supported by Winston. It writes a separate XML configuration file, and we would like to not duplicate the logic from Winston that writes this file into the Chef cookbook. Internally, we will look at adding support for Winston to take this as a command line argument. In the meantime, the cookbook doesn't support this.

Inspect the cookbook changes that removed setup.xml and the existing handling of logFileDirectory, then compare them with Winston's separate XML configuration behavior. Done would require a supported way to configure logFileDirectory without duplicating Winston's file-writing logic; the issue mentions possible future command-line support but names no files or tests.

Written by the indexing model from the issue text.