[DRE-maint] rabbit is marked for autoremoval from testing

[Debian testing autoremoval watch]

rabbit 2.1.9-2 is marked for autoremoval from testing on 2017-08-19

It is affected by these RC bugs:
868774: rabbit: rabbit FTBFS: test failures

It (build-)depends on packages with these RC bugs:
867516: pytest-xdist: pytest-xdist FTBFS with python 3.6 as supported version
869094: pytest-xdist: TestLooponFailing::test_looponfail_removed_test FAILED