Tracking getByToken migration, part 0.1 (DeDx, IterativeTracking, FinalTrackSelectors)

[gpetruc]

getByToken migration in many tracking modules.

First set of tags, with no external dependencies

Notes:

• some modules not running in the default sequence have not been migrated
• the getByLabels done through the ClusterRemovalRefSetter have not been migrated, as to my knowledge they're obsolete, and they're not trivial to do (the tag is known only at runtime). A call to consumesMany might be added if those are needed.

[ktf]

@nclopezo can you please test?
@slava77 @thspeer can you sign off? Thanks.

[cmsbuild]

The following categories have been rejected by speer (a.k.a. @thspeer on GitHub): Reconstruction

@cms-git-reconstruction

[thspeer]

Since Pull Request 556 is OK and contains this as well, I signed only PR 556

[ktf]

Please use hash in front of the pull request id (e.g. #556) to mention other pull requests given github is smart enough to cross-link those, then. Closing this one.