This is a merge request for the measuring ip churn(#34075 (closed)) support.
Following new command-line tool is introduced:
- DistinctCounter: examine ip set measurement file to determine the approximate number of distinct IP addresses
Following new functionality is introduced:
- Distinct IP Set Info Recording: the broker will be able to record the IP Set data that allow approximate counting of the number of users connected, without the need of remembering individual IP addresses.