[pve-devel] hugepages support v2

[Alexandre Derumier]

Changelog:

- hugepages option is a enum (any | 2 | 1024)

  any: we try to use 1GB pages if host support it and memory is multiple of 1GB
       if not we use 2MB pages
  2: we force 2MB hugepages
  1024: we force 1GB hugepages  (in this case memory need to be multiple of 1GB)

- dynamic allocation|deallocation of hugepages

- auto hugepagetlbfs mounts