Default #in_installer? to false
Default #in_installer? to false

This ensures that these tests will pass if the environment has
`VAGRANT_INSTALLER_ENV=1` set (e.g. in a local development environment).

sni/vagrant,chrisroberts/vagrant,chrisroberts/vagrant,sni/vagrant,marxarelli/vagrant,mitchellh/vagrant,marxarelli/vagrant,mitchellh/vagrant,chrisroberts/vagrant,sni/vagrant,chrisroberts/vagrant,sni/vagrant,marxarelli/vagrant,mitchellh/vagrant,marxarelli/vagrant,mitchellh/vagrant