JBPM-4527 Default handler for BoundaryErrorEvent to meet BPMN2 spec
- Test case

(cherry picked from commit eceac7e79bf060ad1ec27bf635b9596b2c8a3038)
JBPM-4527/BZ-1175689 - Default handler for BoundaryErrorEvent to meet BPMN2 spec

(cherry picked from commit 6ec18beeecd89fcdfe2a247f089b9da94f88975f)