Update version to PE3.7

- Add hierafiles to reduce heap usage of the components
- add puppet manifest to symlink site.pp for production env
- make puppet master use 2GB of RAM
- add stdlib to master_base role because it no longer ships in PE
Change boxes to use centos 6.5 instead of 6.4

Dnsmasq was giving me errors that I traced to be an incompatibility
with dnsmasq and the kernel version in 6.4.  Updating to 6.5
allowed dnsmasq to work without issue.