Stop operating on DB in a stress test background thread #10373
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Summary:
Stress test background threads do not coordinate with test worker
threads for db reopen in the middle of a test run, thus accessing db
obj in a stress test bg thread can race with test workers. Remove the
TimestampedSnapshotThread.
Test Plan:
make crash_test_with_txn
make crash_test_with_multiops_wc_txn