getByToken migration: Muon-Seeded seeders of iterative tracking
getByToken migration: MeasurementTrackerEventProducer
Merge pull request #2805 from gpetruc/getByToken-MeasurementTrackerEventProducer-MuonSeededSeeders-on710p4

RecoTracker -- getByToken: Muon-seeded seeding, MeasurementTrackerEvent