Fix HIP configuration for CMSSW_7_X

Fixing track-refitting sequences to avoid  MeasurementTrackerEvent issues as discussed in other PRs such as #6244 and #6233. Cleanup of the Cosmic data selection and introduction of the warning when using starting conditions for the Global position record with multiple IOVs as in V00-28-00 cvs tag (never entered in release)
@mmusich 
This is really a minor issue: instead of using integer literals, you can refer to the IOV limits defined in `CondCore/CondDB/interface/Time.h` and `CondFormats/Common/interface/Time.h` (where the traits pattern is used).