fix some launcher bugs
fix some launcher bugs

/cc @sethvargo

redhat-developer-tooling/vagrant-installers,mitchellh/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers,mitchellh/vagrant-installers,redhat-developer-tooling/vagrant-installers,mitchellh/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,chrisroberts/vagrant-installers,mitchellh/vagrant-installers,redhat-developer-tooling/vagrant-installers,mitchellh/vagrant-installers,redhat-developer-tooling/vagrant-installers