Fix affiliation matching tests

[eshadatta-crossref]

rorapi.tests_functional.tests_matching.AffiliationMatchingTestCase are failing non-deterministically. Examples of failures include: a fail on the recall and when I ran it locally, a failure on the accuracy:

FAIL: test_matching (rorapi.tests_functional.tests_matching.AffiliationMatchingTestCase)
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Traceback (most recent call last):
  File "/home/app/webapp/rorapi/tests_functional/tests_matching.py", line 50, in test_matching
    self.assertTrue(accuracy >= ACCURACY_MIN)
AssertionError: False is not true

Please investigate the test to see if it's a matter of adjusting the value or if something else needs to be tweaked (indexing, matching or something else). If the affiliation matching could be run over the set of the various versions of GRID that we have to see if there's a degradation, that would be really useful.

[JeremyBrent]

We're testing the ROR API locally, and getting this error as well:

======================================================================
FAIL: test_matching (rorapi.tests.tests_functional.tests_matching_v1.AffiliationMatchingTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/app/webapp/rorapi/tests/tests_functional/tests_matching_v1.py", line 53, in test_matching
    self.assertTrue(accuracy >= ACCURACY_MIN)
AssertionError: False is not true

Our logs show accuracy is:
Accuracy: 0.762 (0.7356054625748849, 0.7883945374251151)

[adambuttrick]

@JeremyBrent for bug reports, we use https://github.com/ror-community/ror-roadmap. I've created as an issue here, but feel free to elaborate or correct if I haven't captured correctly.

[JeremyBrent]

Thank you @adambuttrick 👍