Comment 9 for bug 1349949

We will need to address this by adding a filter to rsyslog, the origin of the issue lies in mongo:
I has been present for quite some time: http://grokbase.com/t/gg/mongodb-user/13bpfds4xr/mongod-logging-noisy-even-with-quiet-flag
They eventually adressed it: https://jira.mongodb.org/browse/SERVER-5952
and it will be out for 2.8 or 3.1.2 : https://github.com/mongodb/mongo/commit/4949daa51bbd5104d666082e968e6dd81c22f2bd