Verify Iterator/Get() against expected state in only `no_batched_ops_test` (#10590)

Summary:
https://github.com/facebook/rocksdb/issues/10538 added `TestIterateAgainstExpected()` in `no_batched_ops_test` to verify iterator correctness against the in memory expected state. It is not compatible when run after some other stress tests, e.g. `TestPut()` in `batched_op_stress`, that either do not set expected state when writing to DB or use keys that cannot be parsed by `GetIntVal()`. The assert [here](d17be55aab/db_stress_tool/db_stress_common.h (L520)) could fail. This PR fixed this issue by setting iterator upperbound to `max_key` when `destroy_db_initially=0` to avoid the key space that `batched_op_stress` touches.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10590

Test Plan:
```
# set up DB with batched_op_stress
./db_stress --test_batches_snapshots=1 --verify_iterator_with_expected_state_one_in=1 --max_key_len=3 --max_key=100000000 --skip_verifydb=1 --continuous_verification_interval=0 --writepercent=85 --delpercent=3 --delrangepercent=0 --iterpercent=10 --nooverwritepercent=1 --prefixpercent=0 --readpercent=2 --key_len_percent_dist=1,30,69

# Before this PR, the following test will fail the asserts with error msg like the following
# Assertion failed: (size_key <= key_gen_ctx.weights.size() * sizeof(uint64_t)), function GetIntVal, file db_stress_common.h, line 524.
./db_stress --verify_iterator_with_expected_state_one_in=1 --max_key_len=3 --max_key=100000000 --skip_verifydb=1 --continuous_verification_interval=0 --writepercent=0 --delpercent=3 --delrangepercent=0 --iterpercent=95 --nooverwritepercent=1 --prefixpercent=0 --readpercent=2 --key_len_percent_dist=1,30,69 --destroy_db_initially=0
```

Reviewed By: ajkr

Differential Revision: D39085243

Pulled By: cbi42

fbshipit-source-id: a7dfee2320c330773b623b442d730fd014ec7056

db_stress_tool/no_batched_ops_stress.cc

@@ -1032,7 +1032,24 @@ class NonBatchedOpsStressTest : public StressTest {
     int64_t ub = lb + FLAGS_num_iterations;
     // Locks acquired for [lb, ub)
     ReadOptions readoptscopy(read_opts);
+    std::string read_ts_str;
+    Slice read_ts;
+    if (FLAGS_user_timestamp_size > 0) {
+      read_ts_str = GetNowNanos();
+      read_ts = read_ts_str;
+      readoptscopy.timestamp = &read_ts;
+    }
     readoptscopy.total_order_seek = true;
+    std::string max_key_str;
+    Slice max_key_slice;
+    if (!FLAGS_destroy_db_initially) {
+      max_key_str = Key(max_key);
+      max_key_slice = max_key_str;
+      // to restrict iterator from reading keys written in batched_op_stress
+      // that do not have expected state updated and may not be parseable by
+      // GetIntVal().
+      readoptscopy.iterate_upper_bound = &max_key_slice;
+    }
     auto cfh = column_families_[rand_column_family];
     std::string op_logs;
     std::unique_ptr<Iterator> iter(db_->NewIterator(readoptscopy, cfh));