JEP-227 update for JTH

[jglick]

#528 + jenkinsci/jenkins#4848

[basil]

Requires the following plugins to be adapted:

cloudbees-folder-plugin/src/test/java/com/cloudbees/hudson/plugins/folder/properties/FolderCredentialsProviderTest.java
copyartifact-plugin/src/test/java/hudson/plugins/copyartifact/CopyArtifactPermissionPropertyTest.java
copyartifact-plugin/src/test/java/hudson/plugins/copyartifact/CopyArtifactTest.java
credentials-plugin/src/test/java/com/cloudbees/plugins/credentials/SystemCredentialsProviderTest.java
docker-commons-plugin/src/test/java/org/jenkinsci/plugins/docker/commons/credentials/DockerRegistryEndpointTest.java
docker-workflow-plugin/src/test/java/org/jenkinsci/plugins/docker/workflow/RegistryEndpointStepTest.java
docker-workflow-plugin/src/test/java/org/jenkinsci/plugins/docker/workflow/ServerEndpointStepTest.java
groovy-postbuild-plugin/src/test/java/org/jvnet/hudson/plugins/groovypostbuild/GroovyPostbuildRecorderTest.java
parameterized-trigger-plugin/src/test/java/hudson/plugins/parameterizedtrigger/test/BuildTriggerConfigTest.java
parameterized-trigger-plugin/src/test/java/hudson/plugins/parameterizedtrigger/test/ParameterizedTriggerPermissionTest.java
pipeline-build-step-plugin/src/test/java/org/jenkinsci/plugins/workflow/support/steps/build/BuildTriggerStepTest.java
workflow-cps-plugin/plugin/src/test/java/org/jenkinsci/plugins/workflow/WorkflowTest.java
workflow-job-plugin/src/test/java/org/jenkinsci/plugins/workflow/job/WorkflowRunTest.java