Disable transparent hugepages on RedHat.
Improve Exec['disable_transparent_hugepage_defrag'].
Use shell provider for hugepages exec.
Disable kernel transparent hugepage compaction everywhere.

Cloudera recommends disabling on all platforms that have
/sys/kernel/mm/redhat_transparent_hugepage/defrag and/or
/sys/kernel/mm/transparent_hugepage/defrag.
Merge branch 'feature/transparent_hugepages' into develop