reduce memory used by iso deposits

[slava77]

• add canDeleteEarly for products of CandIsoDepositProducers
• reduce max cone size for isodeposit collections to be the max cone used to compute isolation sums (removing unused {x, eta, phi} values which just take up space)
• add fixes to CaloExtractorByAssociator to preserve old behavior (calo energies computed for the candidate itself may be outside of the reduced cone size)

expect essentially no differences apart for edge effects from double-float-double conversions present in the original code (differences from single deposit miss on R=0.4 were visible at 2E-5 rate per muon in PU200).

Net effect in PU200:

• about 0.24 GB/core reduction in RSS peak
• 3s/event reduction in time spent by various isodeposit producers (mainly in muPFIsoDeposit*)

[cmsbuild]

A new Pull Request was created by @slava77 (Slava Krutelyov) for CMSSW_9_0_X.

It involves the following packages:

CommonTools/ParticleFlow
Configuration/StandardSequences
RecoMuon/Configuration
RecoMuon/MuonIsolation
RecoMuon/MuonIsolationProducers
RecoParticleFlow/PFProducer

@cvuosalo, @monttj, @cmsbuild, @franzoni, @slava77, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @rappoccio, @makortel, @felicepantaleo, @abbiendi, @Martin-Grunewald, @mmarionncern, @battibass, @ahinzmann, @jhgoh, @lgray, @jdolen, @HuguesBrun, @trocino, @rociovilar, @GiacomoSguazzoni, @rafaellopesdesa, @rovere, @VinInn, @bellan, @gkasieczka, @dgulhan, @calderona, @cbernet, @bachtis this is something you requested to watch as well.
@davidlange6, @smuzaffar you are the release manager for this.

cms-bot commands are listed here #13028

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/17359/console Started: 2017/01/21 04:44

[cmsbuild]

+1
Tested at: 1609487
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-17241/17359/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-17241/17359/summary.html

[slava77]

+1

for #17241 1609487

• jenkins tests pass and comparisons show no differences as expected in the pre-submission tests