vagrantfile: convert spaces to tabs

Signed-off-by: Mikhail Ushanov <gm.mephisto@gmail.com>

Vagrantfile

@@ -5,9 +5,9 @@ LINUX_BASE_BOX = "bento/ubuntu-16.04"
 FREEBSD_BASE_BOX = "jen20/FreeBSD-12.0-CURRENT"
 
 Vagrant.configure(2) do |config|
-        if Vagrant.has_plugin?("vagrant-cachier")
-                config.cache.scope = :box
-        end
+	if Vagrant.has_plugin?("vagrant-cachier")
+		config.cache.scope = :box
+	end
 
 	# Compilation and development boxes
 	config.vm.define "linux", autostart: true, primary: true do |vmCfg|