Print non-ok status for multi_ops_txns_stress test

[cbi42]

Currently assert(s.ok()) does not offer much information to debug.

Test plan: revert #12639 and run python3 ./tools/db_crashtest.py blackbox --write_policy write_prepared --recycle_log_file_num=1 --threads=1 --test_multiops_txn

before this PR:

Exit Before Killing
stdout:

stderr:
 db_stress: db_stress_tool/multi_ops_txns_stress.cc:1529: void rocksdb::MultiOpsTxnsStressTest::PreloadDb(rocksdb::SharedState*, int, uint32_t, uint32_t, uint32_t, uint32_t): Assertion `s.ok()' failed.

after this PR:

Exit Before Killing
stdout:

stderr:
 Verification failed: PreloadDB failed: Invalid argument: WriteOptions::disableWAL option is not supported if DBOptions::recycle_log_file_num > 0
db_stress: db_stress_tool/db_stress_test_base.cc:517: void rocksdb::StressTest::ProcessStatus(rocksdb::SharedState*, std::string, rocksdb::Status, bool) const: Assertion `false' failed.
Received signal 6 (Aborted)

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@cbi42 has updated the pull request. You must reimport the pull request before landing.

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@cbi42 has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

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@cbi42 merged this pull request in 2eb404d.