Resolve "Follow-up from "Rate Limiting""

Closes #2422 (closed).

• 4e05f5e8 add limits to the list of hook libraries in the ARM
• 153e8621 add formatDhcpSpace() for straightforward string formatting. Removed the previously added queryArgument<D>() and subnetArgument<D>(). It was not maintainable to add such a function each time you need a version-specific string. It was also less readable.