Deduplicate test names in //folly/synchronization/test:lock_test (part 2)
Deduplicate test names in //folly/synchronization/test:lock_test (part 2)

Summary:
There are more duplication issues which I missed in D40259866 (https://github.com/facebook/folly/commit/213768a70e355a3d503ef386e08345a2f8a0dfe2)

Give tests unique case-insensitive names
The problem here is that the tests are using prefixes like su, Su, sU and SU, but Test Infra treats test-names as case insensitive so they all end up reporting results to the same test entity: https://www.internalfb.com/intern/test/562949995823404?ref_report_id=0

Reviewed By: ggml1

Differential Revision: D40297053

fbshipit-source-id: d78e460f467021e0e84218f71666be144ea9b20b

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly