testtools 2.8.0 removed TestCase.skip in favour of TestCase.skipTest [1]. We were mainly using the latter already. Migrate what's left. [1] https://github.com/testing-cabal/testtools/blob/2.8.0/NEWS#L33 Change-Id: I808be0f446d0b96ff4b10a6ceca8a61bbc80fa22 Signed-off-by: Stephen Finucane <stephenfin@redhat.com>