Jetty Error on Large Workflow Instances

Create a large workflow instance (lots of segment data or user being part of a lot of groups) and watch the following warnings/errors show up in the logs:

2016-04-28 13:39:47,463 | WARN | (ServiceRegistryJpaImpl:2258) - Service org.opencastproject.workflow@http://<admin>:8080 failed (500) accepting org.opencastproject.job.jpa.JpaJob@625947a1

2016-05-10 14:40:16,325 | WARN | (ServletHandler:563) - /workflow/dispatch
java.lang.IllegalStateException: Form too large 840314>200000