extend the AOD content for EXO Long-Lived needs

This is a pull request to test the changes discussed during the "Scouting Parking & Hotline" workshop.
Regarding the possibility to extend the AOD content to include dE/dx information associated to highPt Tracks as well as the Muon segments (DT and CSC) and hits (RPC).
Instead of creating at least 3 new skims for the EXO Long-Lived searches.

This PR is meant to allow @StoyanStoynev and @slava77 to see what are the proposed changes and to study their impact on the reconstruction and disk space
Automatically ported from CMSSW_7_3_X #6532
Was this all tested?

For all-pixels in infos_, pixelCluster(0) will return pixelClusters_[1]; this looks wrong.

the check for for ``` if (i >= infos_.size()) ``` can be done once outside of the loop; (this is what ``` j<= i&& j< infos_.size() ``` means here)