fix issue with trend-plotting in payload inspector

[mmusich]

PR description:

In PR #32404 I introduced a modification to CondCore/Utilities/interface/PayloadInspector.h in order to be able retrieve the list of dead modules in JSON format from the SiStripDetVOff DB record.
The setting of precision(0) was meant to strip off the decimal place from the DetId number (stored as double), but it turns out that applying this change indiscriminately kills all the trend plotting for quantities stored as double and with non vanishing decimal parts. See e.g. this example:

I fix the issue by imposing that the setting of the precision is applied only when the number to display has no decimal part to start with.

PR validation:

Run the following command:

getPayloadData.py --plugin pluginBeamSpotOnline_PayloadInspector --plot plot_BeamSpotOnline_HistoryX --tag BeamSpotOnlineTestHLT --time_type Lumi --iovs '{"start_iov": "1458480699408457", "end_iov": "1458480699408459"}' --db Prod --test ;

with this branch and got:

{
    "version": "1.0", 
    "data": [
        {
            "y": -0.070925, 
            "x": 1458480699408457, 
            "y_err": 0
        }, 
        {
            "y": 0.140151, 
            "x": 1458480699408458, 
            "y_err": 0
        }, 
        {
            "y": -0.04356, 
            "x": 1458480699408459, 
            "y_err": 0
        }
    ], 
    "annotations": {
        "x_label": "iov_since", 
        "y_label": "X", 
        "type": "History", 
        "payload_type": "BeamSpotOnlineObjects", 
        "title": "X vs run number"
    }
}

while in vanila CMSSW_11_3_X_2021-02-12-1100 I get

{
    "version": "1.0", 
    "data": [
        {
            "y": 0, 
            "x": 1458480699408457, 
            "y_err": 0
        }, 
        {
            "y": 0, 
            "x": 1458480699408458, 
            "y_err": 0
        }, 
        {
            "y": 0, 
            "x": 1458480699408459, 
            "y_err": 0
        }
    ], 
    "annotations": {
        "x_label": "iov_since", 
        "y_label": "X", 
        "type": "History", 
        "payload_type": "BeamSpotOnlineObjects", 
        "title": "X vs run number"
    }
}

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

[mmusich]

type bug-fix

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-32902/21131

• 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:

CondCore/Utilities

@ggovi, @cmsbuild can you please review it and eventually sign? Thanks.
@mmusich this is something you requested to watch as well.
@silviodonato, @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-ed1192/12868/summary.html
COMMIT: e78d46e
CMSSW: CMSSW_11_3_X_2021-02-12-1100/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/32902/12868/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

@slava77 comparisons for the following workflows were not done due to missing matrix map:

• /data/cmsbld/jenkins/workspace/compare-root-files-short-matrix/data/PR-ed1192/11634.911_TTbar_14TeV+2021_DD4hep+TTbar_14TeV_TuneCP5_GenSim+Digi+Reco+HARVEST+ALCA

Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 37
• DQMHistoTests: Total histograms compared: 2750846
• DQMHistoTests: Total failures: 1
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2750823
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 36 files compared)
• Checked 156 log files, 37 edm output root files, 37 DQM output files

[ggovi]

+1

[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. @silviodonato, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[qliphy]

+1