Quote positional parameters in vagrant wrapper script.
Quote positional parameters in vagrant wrapper script.

References https://github.com/mitchellh/vagrant/issues/775
chrisroberts/vagrant-installers,mitchellh/vagrant-installers,redhat-developer-tooling/vagrant-installers,redhat-developer-tooling/vagrant-installers,mitchellh/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers,redhat-developer-tooling/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers,mitchellh/vagrant-installers,redhat-developer-tooling/vagrant-installers,mitchellh/vagrant-installers