Protect default PAT jet configuration (81X)

[ferencek]

This PR addresses the problem reported in https://hypernews.cern.ch/HyperNews/CMS/get/edmFramework/3631.html by protecting the default PAT jet configuration from being modified inadvertently.

Update (Mar. 10, 2016): Rebased to CMSSW_8_1_X_2016-03-10-1100 with

process.patJetsPuppi.userData.userInts.src = cms.VInputTag(cms.InputTag(""))

(introduced in #13642 but now redundant) removed from PhysicsTools/PatAlgos/python/slimming/miniAOD_tools.py.

[cmsbuild]

A new Pull Request was created by @ferencek (Dinko Ferenček) for CMSSW_8_1_X.

It involves the following packages:

PhysicsTools/PatAlgos

@cvuosalo, @monttj, @cmsbuild, @slava77, @vadler, @davidlange6 can you please review it and eventually sign? Thanks.
@TaiSakuma, @imarches, @ahinzmann, @acaudron, @mmarionncern, @rappoccio, @jdolen, @nhanvtran, @schoef, @ferencek, @gpetruc, @mariadalfonso, @pvmulder this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

cms-bot commands are list here #13028

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/11725/console

[cmsbuild]

+1
Tested at: 092b178
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11725/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
a8b575a
02f36fb
fcb7c2e
cddd2e0
7e4152f
bfb1e26
ef8ce2c
de4cc46
bd32fd6
3dd87be
b399646
db25ba1
215f4d0
60adbbf
8fbf76e
8f7ca40
4f35bfa
e63bd64
bdd4dc4
fab75b7
ae0beef
ef24024
7c6de14
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11725/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11725/git-merge-result

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11725/summary.html

[cvuosalo]

+1

For #13606 092b178

Protecting PAT jet configuration from undesired modification.

#13605 is the 80X version of this PR, and it has already been approved by Reco.

The code change is satisfactory, and Jenkins tests against baseline CMSSW_8_1_X_2016-03-03-1100 show no significant differences, as expected, except for the differences caused by the additional PRs Jenkins included in the tests. Additional checks were performed for #13605, and they showed the expected results.

[ferencek]

Except there is now a merge conflict after #13642 got merged. Will rebase to fix the conflict.

[ahinzmann]

@ferencek I think now you'll have to undo the line I put in here (I was going to do it in my PR after this one gets merged, but now it is the other way round):
https://github.com/cms-sw/cmssw/pull/13642/files#diff-76dede28e7751d7bb6c5c9542de4155cR254

[ferencek]

@ahinzmann, yes, I was planning to do that. Thanks for the reminder.

[cmsbuild]

Pull request #13606 was updated. @cvuosalo, @monttj, @cmsbuild, @slava77, @vadler, @davidlange6 can you please check and sign again.

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/11820/console

[cmsbuild]

+1
Tested at: 0b0c65a
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11820/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
5209ee0
fad713d
14dc154
795a33c
eb89ad7
5518252
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11820/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11820/git-merge-result

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13606/11820/summary.html

[cvuosalo]

+1

For #13606 0b0c65a

Second approval after rebase.

New Jenkins tests are OK, though they have differences caused by the other PRs included in the tests.