FENNEL:  fix for FNL-32, sporadic failure in FennelDmlTest due to missing checkpoint lock in FTRS table writer
FENNEL:  fix for FNL-32, sporadic failure in FennelDmlTest
due to missing checkpoint lock in FTRS table writer

[git-p4: depot-paths = "//open/lu/dev/": change = 7097]

LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb