Error early if provision option is set to false but Vagrantfile not found

User needs to enable provision
Merge pull request #201 from maestrodev/provision-anyway

If provision option is set to false but Vagrantfile not found, then provision anyway
(maint) create host.hostname procedure

- convenience method for accessing the hostname of the given host
Merge pull request #197 from anodelman/google-cloud

(QENG-407) update google compute to differentiate between template and platform
Merge pull request #205 from anodelman/vmname-confusion

(maint) create host.hostname procedure