sv_intervalscript - time based map script
Both mapscript methods are inefficient when you want all of your servers to auto update, for example, config changes and/or a banlist.
This feature would make a script run on a periodic interval.
This is a functional version of the feature. An update interval of 2 minutes is hardcoded so I could cut down on cvars added, it seems like it should be sufficient.
I really think the interval should be an additional parameter, that way you don't need an additional cvar.