Add symbol for DescriptionColumn

[basil]

DescriptionColumn currently doesn't work with the Dynamic DSL in Job DSL. Attempting to use it with

descriptionColumn {
  displayName false
  trim true
  displayLength 7
  columnWidth 0
  forceWidth false
}

yields the following error:

ERROR: Found multiple extensions which provide method descriptionColumn with arguments […]: [jenkins.plugins.extracolumns.DescriptionColumn, jenkins.branch.DescriptionColumn]

To solve this I added a symbol to disambiguate DescriptionColumn. I named it projectDescriptionColumn because in the UI the relevant column is called "Project Description".

I verified that with this patch the following syntax works:

projectDescriptionColumn {
  displayName false
  trim true
  displayLength 7
  columnWidth 0
  forceWidth false
}

CC @fredg02

[fredg02]

Thanks for your pull request. Is this the only column that needs an extra symbol? Have you tested any other columns with the JobDSL plugin?

[basil]

Thanks for your pull request.

You're welcome!

Is this the only column that needs an extra symbol?

I believe that it is.

Have you tested any other columns with the JobDSL plugin?

I've tested buildDescriptionColumn with the Dynamic DSL and it works fine without a symbol. I haven't tested the others, but all of these show up in the Dynamic DSL API viewer, which means they are available for use:

buildDescriptionColumn
buildDurationColumn
buildParametersColumn
configureProjectColumn
cronTriggerColumn
disableProjectColumn
jobTypeColumn
lastBuildColumn
lastBuildConsoleColumn
lastBuildNodeColumn
lastJobConfigurationModificationColumn
scmTypeColumn
slaveOrLabelColumn
testResultColumn
userNameColumn
workspaceColumn

Note that descriptionColumn was not in this list prior to this PR. But with this PR, it shows up in the API viewer as projectDescriptionColumn.

[fredg02]

Cool. Thanks for the quick reply. Let's merge this PR then.

[basil]

Thanks for merging this, @fredg02! Would it be possible to get a release in the coming weeks?

[fredg02]

I'll try to do a release next week.