The new defaults allows jenkins-job-builder to reload the configuration
out-of-the-box, whereas the previous defaults required users to manually
reload/restart jenkins, or configure accessUser/accessTokenFile
themselves.
(If `extraJavaOptions = [ "-Djenkins.install.runSetupWizard=false" ]`
then the initial admin user is *not* created and you have to use JCasC
or something else to bootstrap.)
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