Added missing includes to EventHypothesisLooper.h

[Teemperor]

We actually dereference a pointer to reco::Candidate in this header,
so we can't just include the Fwd.h header but need the full
Candidate header. We also need to include the EventHypothesis.h
because we reference EventHypothesis in this header. This patch
adds these includes to make this header parsable on its own.

[Teemperor]

Part of the work going on regarding the C++ modules migration of CMSSW (tracked as issue #15248). This PR is not meant to refactor things, but just to make these headers compile.

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/PR-21551/2312

[cmsbuild]

A new Pull Request was created by @Teemperor (Raphael Isemann) for master.

It involves the following packages:

DataFormats/PatCandidates

@perrotta, @cmsbuild, @monttj, @slava77 can you please review it and eventually sign? Thanks.
@gpetruc, @gouskos, @rovere, @cbernet this is something you requested to watch as well.
@davidlange6, @slava77 you are the release manager for this.

cms-bot commands are listed here

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/24873/console Started: 2017/12/01 04:43

[cmsbuild]

+1
Tested at: ca6ada0
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-21551/24873/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
a2fb258
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-21551/24873/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-21551/24873/git-merge-result

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-21551/24873/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 27
• DQMHistoTests: Total histograms compared: 2835085
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2834906
• DQMHistoTests: Total skipped: 178
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.579999999813 KiB( 23 files compared)
• Checked 111 log files, 8 edm output root files, 27 DQM output files

[slava77]

+1

for #21551 ca6ada0

• technical update to add include files
• jenkins tests pass

[davidlange6]

merge