LDEV-5023 use a lock around entire QoQ jdbc process #1276

All 3 553 tests pass, 220 skipped in 3m 51s

1 files ±0 1 440 suites ±0 3m 51s ⏱️ +13s
3 773 tests ±0 3 553 ✅ ±0 220 💤 ±0 0 ❌ ±0
3 902 runs ±0 3 661 ✅ ±0 241 💤 ±0 0 ❌ ±0

Results for commit 751fc83. ± Comparison against earlier commit c585298.