javacheckstyle add_comment raising error

[cflee]

On recent VOC PRs, when there is a javacheckstyle issue, the add_comment bit fails and stops the full list of checkstyle issues from being returned, so you can only see the first error.

• Str.java - test.subscr.bool voc#706
• output: https://beekeeper.herokuapp.com/projects/pybee/voc/change/56fc9e98-c8c3-4aad-966a-c54d29306aac/build/85978281-d18b-4cb2-a85f-e1fa0fb2fed2/task/beefore:javacheckstyle