Listener to provide extensions with validation of assignees.
Change-Id: I61f6558d79b8e4c0d322c293dacdf4f33d882b26
* submodules:
* Update plugins/cookbook-plugin from branch 'master'
- AssigneeValidator example
Will not allow a user to be assigned to more than 5 changes.
Change-Id: I1887f7007e66bd5ccac207c7789be2712ffbd00a