Add DQM modules for single lepton+HT SUSY triggers

Replacing pull request #6434 to avoid problematic rebase.

PR adds DQM modules for single lepton+HT SUSY triggers not included in #6255:
HLT_Ele15_IsoVVVL_BTagtop8CSV07_PFHT400
HLT_Ele15_IsoVVVL_PFHT400_PFMET70
HLT_Ele15_IsoVVVL_PFHT600
HLT_Ele15_PFHT300
HLT_Mu15_IsoVVVL_BTagCSV07_PFHT400
HLT_Mu15_IsoVVVL_PFHT400_PFMET70
HLT_Mu15_IsoVVVL_PFHT600
HLT_Mu15_PFHT300
I may be misunderstanding something, but I don't think what you're suggesting produces the same/desired behavior due to the fall through behavior of the switch.

I could change this to something like
if(num_csvl>=4) h_btagTurnOn_den_->Fill(4);
if(num_csvl>=3) h_btagTurnOn_den_->Fill(3);
...etc.

I don't think that's what you're suggesting though, and is (in my opinion at least) harder to read/maintain. I'll make the change though if you think it's clearer.