Updating syntax for nfs per http://docs.vagrantup.com/v2/synced-folders/nfs.html
Better to pass in core folder value
Completely redid Vagrantfile templates to only use config.yaml values
Temp. Removing vagrantfile-local.vagrant.host value from Vagrantfile until I learn some Ruby
Turns string vagrant.host into symbol. Properly fixes #392
vagrant.host value is symbol, no : needed