Code review comment for lp:~allanlesage/helipad/test-fixes

I'm seeing:

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FAIL: test_get_integration_status_fail_build (ci.tests.unit.test_heuristics.TestHeuristics)
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Traceback (most recent call last):
  File "/home/chris/dashboard/some-ci-reviews/ci/tests/unit/test_heuristics.py", line 67, in test_get_integration_status_fail_build
    self.assertEqual(ret, 'Failed build')
AssertionError: 'Build failed' != 'Failed build'

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FAIL: test_get_integration_status_fail_check (ci.tests.unit.test_heuristics.TestHeuristics)
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Traceback (most recent call last):
  File "/home/chris/dashboard/some-ci-reviews/ci/tests/unit/test_heuristics.py", line 74, in test_get_integration_status_fail_check
    self.assertEqual(ret, 'Failed check')
AssertionError: 'Testing failed' != 'Failed check'

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FAIL: test_get_integration_status_fail_prepare (ci.tests.unit.test_heuristics.TestHeuristics)
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Traceback (most recent call last):
  File "/home/chris/dashboard/some-ci-reviews/ci/tests/unit/test_heuristics.py", line 60, in test_get_integration_status_fail_prepare
    self.assertEqual(ret, 'Failed prepare')
AssertionError: 'Prepare failed' != 'Failed prepare'