Disable transparent hugepages on PaaS Docker

Summary:
Redis and MongoDB both advise to disable Transparent Hughe Pages (THP).

The RedHat documentation indicates this default option
isn't suitable for databases workloads.

As it's reasonable to consider a Docker engine will host
MySQL, PostgreSQL, Redis or some NoSQL containers, we can
disable this setting.

Test Plan: cat /sys/kernel/mm/transparent_hugepage/enabled

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D1999