[GHC] #16206: Run Haddock's test suite in CI

[GHC]

#16206: Run Haddock's test suite in CI
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        Reporter:  sjakobi           |                Owner:  (none)
            Type:  task              |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Test Suite        |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |  https://gitlab.haskell.org/ghc/ghc/merge_requests/291
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Changes (by harpocrates):

 * status:  new => patch
 * differential:   => https://gitlab.haskell.org/ghc/ghc/merge_requests/291


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16206#comment:3>
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