Redis Check THP support for Redhat distributions.

Redhat distributions have a different THP file path with the others. We check '/sys/kernel/mm/transparent_hugepage/enabled' to get THP support status. But the file path for Redhat distributions is '/sys/kernel/mm/redhat_transparent_hugepage/enabled'. I think we need to handle it too.

Comment From: yoav-steinberg

See comment in the PR #5031. Closing.