provisioners/chef: support proper counter for multiple chefs

plugins/provisioners/chef/config/base.rb

@@ -1,7 +1,11 @@
+require "vagrant/util/counter"
+
 module VagrantPlugins
   module Chef
     module Config
       class Base < Vagrant.plugin("2", :config)
+        extend Vagrant::Util::Counter
+
         attr_accessor :arguments
         attr_accessor :attempts
         attr_accessor :binary_path
@@ -74,6 +78,12 @@ module VagrantPlugins
 
           # Make sure the log level is a symbol
           @log_level = @log_level.to_sym
+
+          # Set the default provisioning path to be a unique path in /tmp
+          if !@provisioning_path
+            counter = self.class.get_and_update_counter(:chef_config)
+            @provisioning_path = "/tmp/vagrant-chef-#{counter}"
+          end
         end
 
         def merge(other)

plugins/provisioners/chef/provisioner/base.rb

@@ -1,6 +1,5 @@
 require 'tempfile'
 
-require "vagrant/util/counter"
 require "vagrant/util/template_renderer"
 
 module VagrantPlugins
@@ -14,14 +13,6 @@ module VagrantPlugins
           error_namespace("vagrant.provisioners.chef")
         end
 
-        include Vagrant::Util::Counter
-
-        def initialize(machine, config)
-          super
-
-          config.provisioning_path ||= "/tmp/vagrant-chef-#{get_and_update_counter(:provisioning_path)}"
-        end
-
         def verify_binary(binary)
           # Checks for the existence of chef binary and error if it
           # doesn't exist.