providers/virtualbox: config to skip guest additions check

plugins/providers/virtualbox/action/check_guest_additions.rb

@@ -1,12 +1,20 @@
+require "log4r"
+
 module VagrantPlugins
   module ProviderVirtualBox
     module Action
       class CheckGuestAdditions
         def initialize(app, env)
           @app = app
+          @logger = Log4r::Logger.new("vagrant::plugins::virtualbox::check_guest_additions")
         end
 
         def call(env)
+          if !env[:machine].provider_config.check_guest_additions
+            @logger.info("Not checking guest additions because configuration")
+            return @app.call(env)
+          end
+
           env[:ui].output(I18n.t("vagrant.virtualbox.checking_guest_additions"))
 
           # Use the raw interface for now, while the virtualbox gem

plugins/providers/virtualbox/config.rb

@@ -8,6 +8,12 @@ module VagrantPlugins
       # @return [Boolean]
       attr_accessor :auto_nat_dns_proxy
 
+      # If true, will check if guest additions are installed and up to
+      # date. By default, this is true.
+      #
+      # @return [Boolean]
+      attr_accessor :check_guest_additions
+
       # An array of customizations to make on the VM prior to booting it.
       #
       # @return [Array]
@@ -39,6 +45,7 @@ module VagrantPlugins
 
       def initialize
         @auto_nat_dns_proxy = UNSET_VALUE
+        @check_guest_additions = UNSET_VALUE
         @customizations   = []
         @destroy_unused_network_interfaces = UNSET_VALUE
         @name             = UNSET_VALUE
@@ -98,6 +105,10 @@ module VagrantPlugins
         # Default is to auto the DNS proxy
         @auto_nat_dns_proxy = true if @auto_nat_dns_proxy == UNSET_VALUE
 
+        if @check_guest_additions == UNSET_VALUE
+          @check_guest_additions = true
+        end
+
         if @destroy_unused_network_interfaces == UNSET_VALUE
           @destroy_unused_network_interfaces = false
         end

test/unit/plugins/providers/virtualbox/config_test.rb

@@ -6,6 +6,10 @@ describe VagrantPlugins::ProviderVirtualBox::Config do
   context "defaults" do
     before { subject.finalize! }
 
+    its(:check_guest_additions) { should be_true }
+    its(:gui) { should be_false }
+    its(:name) { should be_nil }
+
     it "should have one NAT adapter" do
       expect(subject.network_adapters).to eql({
         1 => [:nat, {}],