Taking CustomDescribableModel out of beta

[jglick]

#43 was released over a year and a half ago, used at least in

• https://github.com/jenkinsci/pipeline-input-step-plugin/blob/ea5fd3106431a081539ace0aa65512dcc2f75a39/src/main/java/org/jenkinsci/plugins/workflow/support/steps/input/InputStep.java#L176-L221
• https://github.com/jenkinsci/git-plugin/blob/f273d31f183105d17e37b3e6c1acf87a2782fa0c/src/main/java/hudson/plugins/git/UserMergeOptions.java#L167-L175
• https://github.com/jenkinsci/workflow-cps-global-lib-plugin/blob/1a9f8ae23743ad06fbc736b4562a5a8ae2395c1d/src/main/java/org/jenkinsci/plugins/workflow/libs/SCMSourceRetriever.java#L214-L225
• https://github.com/jenkinsci/pipeline-build-step-plugin/blob/9a85d3150a61536bfe6a6ca358cf16383ffd9c13/src/main/java/org/jenkinsci/plugins/workflow/support/steps/build/BuildTriggerStep.java#L139-L175
• https://github.com/jenkinsci/github-branch-source-plugin/blob/490693b59b83a4a82b0b94dd1ba2c7b5870be005/src/main/java/org/jenkinsci/plugins/github_branch_source/GitHubSCMSource.java#L1969-L1983
• https://github.com/cloudbees/cloudbees-workflow-template-plugin/blob/d9a189909c25474882d64b5642d560b3de55b50b/src/main/java/com/cloudbees/pipeline/governance/templates/TemplateCatalog.java#L942-L955 (proprietary)

Seems to make sense to treat it as official by now. Might help unblock jenkinsci/docker-workflow-plugin#170.

[timja]

?

I also used it in mask-passwords I believe

[jglick]

@car-roll BTW this was merged without a label, so omitted from release notes.

[car-roll]

@jglick updated https://github.com/jenkinsci/structs-plugin/releases/tag/structs-parent-1.23