Ignore .pe_build and .vagrant folders
Install root certs for Windows for PMT
Change node classification names for web and db

 - Change server_role=database to database_role=true and change
   server_role=web to web_role=true so that it's easier for one node
   to have multiple roles
 - Update site.pp accordingly
Forward web nodes port 80 to to host 8080
Remove separate SQL node, add sql role to web node
Guard nsclient install on non-Windows, else master explodes
Don't include any classes on nodes by default
Define our sqlce class for use on database nodes

  - also include SQL CE installer