updated sherpa to v2.2.2

[cmsbuild]

backport of #2855

Requested cms-externals/sherpa#9

[smuzaffar]

please test

[cmsbuild]

A new Pull Request was created by @cmsbuild for branch IB/CMSSW_9_0_X/gcc530.

@cmsbuild, @smuzaffar, @iahmad-khan, @davidlange6 can you please review it and eventually sign? Thanks.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/17999/console

[cmsbuild]

+1
Tested at: d15f639
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2867/17999/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2867/17999/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