Disable PersistentCacheTierTest.BasicTest (#10683)

Summary:
Disable this flaky test since PersistentCache is not used.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10683

Test Plan: Unit Tests

Reviewed By: cbi42

Differential Revision: D39545974

Pulled By: gitbw95

fbshipit-source-id: ac53e96f6ba880e7612e325eb5ff22ee2799efed

utilities/persistent_cache/persistent_cache_test.cc

@@ -140,7 +140,7 @@ TEST_F(PersistentCacheTierTest, DISABLED_BlockCacheInsertWithFileCreateError) {
 // Travis is unable to handle the normal version of the tests running out of
 // fds, out of space and timeouts. This is an easier version of the test
 // specifically written for Travis
-TEST_F(PersistentCacheTierTest, BasicTest) {
+TEST_F(PersistentCacheTierTest, DISABLED_BasicTest) {
   cache_ = std::make_shared<VolatileCacheTier>();
   RunInsertTest(/*nthreads=*/1, /*max_keys=*/1024);