Increase transaction timeout and enable deadlock detection in stress test (#7056)

Summary:
There are errors like `Transaction put: Operation timed out: Timeout waiting to lock key
terminate called without an active exception`, based on experiment on devserver, increasing timeouts can resolve the issue.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/7056

Test Plan: watch stress test with txn.

Reviewed By: anand1976

Differential Revision: D22317265

Pulled By: cheng-chang

fbshipit-source-id: 2dc3352def5e78d2c39a18d7262a3a65ca98bbba

db_stress_tool/db_stress_test_base.cc

@@ -463,6 +463,8 @@ Status StressTest::NewTxn(WriteOptions& write_opts, Transaction** txn) {
   }
   static std::atomic<uint64_t> txn_id = {0};
   TransactionOptions txn_options;
+  txn_options.lock_timeout = 60000; // 1min
+  txn_options.deadlock_detect = true;
   *txn = txn_db_->BeginTransaction(write_opts, txn_options);
   auto istr = std::to_string(txn_id.fetch_add(1));
   Status s = (*txn)->SetName("xid" + istr);