cms-sw/cmssw CMSSW_7_5_7_patch2 on GitHub

➡️ Merge due to automatic forward port
CMSSW_7_5_7_patch1...CMSSW_7_5_7_patch2

#12603 from @fioriNTU: Fix for on Track Cluster plots in Offline Pixel DQM for HI runs dqm
#12601 from @deguio: make available a light dqm sequence for HI dqm
#12598 from @threus: Turning back on cluster plots for offline DQM for HI dqm
#12594 from @slava77: use TrackCollection instead of a view of tracks in muon track isolation comparison reconstruction
#12592 from @slava77: Fail read calls after exception. (same as #12590) core
#12575 from @fioriNTU: add file needed for QTest in Offline dqm
#12570 from @iik1997: Quick fix to account for recent updates of castor and zdc unpackers dqm
#12562 from @dmitrijus: Make sure StreamerInputSource throws an error (75x) core dqm
#12536 from @threus: modifications for Pixel online DQM config for HI run dqm
#12525 from @hroskes: Backport of #12523: Small bugfixes in alignment workflows alca
#12522 from @istaslis: Added 2d DQM plot for Heavy Ions UCC dqm
#12521 from @threus: modifications for SiStrip online DQM config for HI run dqm
#12512 from @richard-cms: Add 2 new GenFilters for use by HI photon team generators
#12470 from @rjwang: add two CSCTF plots for debugging MPC/TMB errors from CSC dqm