Support disabling of notifications of build status to bitbucket for SPECIFIC plans/jobs

In addition to our actual CI builds that run tests on a branch, we have several jobs that run various tasks unrelated to the CI (from the same git repository).

When looking at the build status in BitBucket, we see these jobs reported even though they aren't really related to the health of a branch. This make the build-status feature in Bitbucket unusable.

We'd like to have some check box that controls whether a job reports it's status to Bitbucket or not.