message: Fix up another compute set name
  Summary: As title. Another multi-IPU thing.
  Test Plan: Run locally
  Reviewers: georgep, jakeh
diff: @@ -310,7 +310,10 @@ class MultiIpuTest(test_util.TensorFlowTestCase):
  self.assertEqual(num_compiles, 1)
  # There is 1 piece of global exchange (aprt from progId)
  - wl = ['progIdCopy/GlobalPreAll', '*_to_/custom-call/GlobalPreAll']
  + wl = [
  + 'switchControlBroadcast*/GlobalPreAll',
  + '*_to_/custom-call/GlobalPreAll'
  + ]
  self.assertTrue(tu.check_all_compute_sets_and_list(ge_list, wl))
  