Comment 3 for bug 1400680

With those two I get:

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FAIL: test_multiple_systemd_ddmconfig_match_no_symlink (__main__.DisplayManagersTest)
create a display-manager symlink to matching systemd unit ddm config
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Traceback (most recent call last):
  File "/tmp/adt-run.toj4SU/build.xFK/real-tree/debian/tests/display-managers", line 77, in test_multiple_systemd_ddmconfig_match_no_symlink
    self.assertTrue(self.is_active_unit('systemddm'))
AssertionError: False is not true

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Ran 17 tests in 60.701s