With this plugin you can publish your OpenCover coverage reports into Jenkins. It implements code-coverage-api-plugin and can generate coverage chart, fail builds using some threshold and show diff between your pull requests and target branches.
Using pipeline: publishCoverage adapters: [opencoverAdapter(mergeToOneReport: true, path: 'testing*.xml')], sourceFileResolver: sourceFiles('NEVER_STORE')
To get better how-to information please refer to this article.