update interface to matplotlib with new histogrammar version

[davidlange6]

(cmsdist PR 2678)

[cmsbuild]

A new Pull Request was created by @davidlange6 (David Lange) for CMSSW_9_0_X.

It involves the following packages:

PhysicsTools/PythonAnalysis

@cmsbuild, @monttj, @davidlange6 can you please review it and eventually sign? Thanks.
@slava77, @smuzaffar you are the release manager for this.

cms-bot commands are listed here #13028

[davidlange6]

please test with cms-sw/cmsdist#2678

[cmsbuild]

The tests are being triggered in jenkins.
Using externals from cms-sw/cmsdist#2678
https://cmssdt.cern.ch/jenkins/job/cmsdist-cmssw-test-pr/80/console

[cmsbuild]

+1
Tested at: ec1b2c2
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16823/80/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-16823/80/summary.html

The workflows 1003.0, 1001.0, 1000.0, 140.53, 136.731, 4.22 have different files in step1_dasquery.log than the ones found in the baseline. You may want to check and retrigger the tests if necessary. You can check it in the "files" directory in the results of the comparisons