Issue 48377 - Update file name for LD_PRELOAD
Bug Description:
We ship versioned libjemalloc.so.2, but LD_PRELOAD still uses
unversioned file name.
Fix Description:
Update LD_PRELOAD to use versioned .so name.
https://pagure.io/389-ds-base/issue/48377
Reviewed by: mreynolds (Thanks!)