DQM SiStrip endcap naming

- update config files used by QualityTest
- adjust c++11 loop in EventFilter/SiStripRawToDigi/test/plugins/SiStripClustersDSVBuilder.cc

NB: w/ this patch some SiStrip MEs in the DQM root file change their name (and directory)
=> this root file is not compatible w/ the prevoius ones