[1144459] [eap6] Warnings in agent.log - Required property 'manage' and 'delete-durable-queue' have a null value
An issue in the plugin descriptor resulted in an ill-defined configuration
definition for the 'Role' "list of maps".  Fixing the descriptor should
resolve the issue when resource config is rediscovered for an existing
resource.  New resources should be fine from the start.

Also, fix an issue in the config editor when rendering a lot of property
fields. Something that showed up after the all of the properties started
showing up.

The lesson here? Listen to your log file warnings :)

(cherry picked from commit 722d7a462b7848425f3fb28bf5174db0122bb2e3)
Signed-off-by: Jay Shaughnessy <jshaughn@redhat.com>