[#252] Add puller and table for RPS
Interrim commit that adds the initial pieces to pull and store RPS data from Kea.
backend/server/apps/kea/rps.go backend/server/apps/kea/rps_test.go
backend/server/database/migrations/26_add_rps_intervals.go backend/server/database/model/rps_interval.go backend/server/database/model/rps_interval_test.go
Closes #252 (closed)
Edited by Thomas Markwalder