Bug#1108309: mdanalysis: FTBFS randomly: autobuilder hangs

[Drew Parsons]

Source: mdanalysis
Followup-For: Bug #1108309
Control: tags -1 ftbfs

Yeah, mdanalysis is generally flakey.
Not a whole lot we can do about it except run the tests again till they pass,
or keep skipping tests until the probability of failure is sufficiently reduced.