define variable for @all_local_requests

[jheiss]

@local_requests only gives me configuration information about the file I'm working with, I'd like to get another variable with all local requests applied to the node. This will allow me, for example, to look at locally added users (to /etc/passwd) and then use that data to decide whether to generate other files.

Moved from https://sourceforge.net/apps/trac/etch/ticket/15