update AlignPCLThresholdsWriter and add unit tests

[mmusich]

PR description:

This is a follow-up to #36142:

• clean-up unused methods
• add fillDescriptions method
• introduce unit tests to read / write payload of the type AlignPCLThresholds

PR validation:

Relies on the augmented unit tests.

if this PR is a backport please specify the original PR and why you need to backport that PR:

N/A

[cmsbuild]

-code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-36177/26743

• This PR adds an extra 16KB to repository

Code check has found code style and quality issues which could be resolved by applying following patch(s)

• code-format:
  https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-36177/26743/code-format.patch
  e.g. curl -k https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-36177/26743/code-format.patch | patch -p1
  You can also run scram build code-format to apply code format directly

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-36177/26745

• This PR adds an extra 16KB to repository

[cmsbuild]

A new Pull Request was created by @mmusich (Marco Musich) for master.

It involves the following packages:

• CondFormats/PCLConfig (db, alca)

@malbouis, @yuanchao, @cmsbuild, @ggovi, @francescobrivio, @tvami can you please review it and eventually sign? Thanks.
@mmusich, @tocheng, @seemasharmafnal this is something you requested to watch as well.
@perrotta, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[mmusich]

@cmsbuild, please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-96b218/20625/summary.html
COMMIT: 64d1f0b
CMSSW: CMSSW_12_2_X_2021-11-18-2300/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/36177/20625/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 42
• DQMHistoTests: Total histograms compared: 3327156
• DQMHistoTests: Total failures: 0
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3327134
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 41 files compared)
• Checked 177 log files, 37 edm output root files, 42 DQM output files
• TriggerResults: no differences found

[tvami]

+1

• Jenkins tests pass
• newly introduced unit test runs fine: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-96b218/20625/unitTests/src/CondFormats/PCLConfig/test/testReadWriteAlignPCLThresholds/testing.log

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @perrotta, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[perrotta]

+1