The test tenant_migration_concurrent_migrations_stress_test is using
currentOp command to wait for all migrations to complete. In every stuck test one or more migrations is in Aborted state fetched from the currentOp output, however from the actual log all migrations completed without error.
The currentOp takes `_durableState.state` value to report on migration state. This investigation may prove that the `_durableState.state` might be in Aborted state for a migration that completed without error.
This bug is to improve diagnostics.