Allow disabling prepend/append hooks

lib/vagrant/action/hook.rb

@@ -69,15 +69,19 @@ module Vagrant
       # called directly.
       #
       # @param [Builder] builder
-      def apply(builder)
-        # Prepends first
-        @prepend_hooks.each do |klass, args, block|
-          builder.insert(0, klass, *args, &block)
-        end
+      def apply(builder, options=nil)
+        options ||= {}
 
-        # Appends
-        @append_hooks.each do |klass, args, block|
-          builder.use(klass, *args, &block)
+        if !options[:no_prepend_or_append]
+          # Prepends first
+          @prepend_hooks.each do |klass, args, block|
+            builder.insert(0, klass, *args, &block)
+          end
+
+          # Appends
+          @append_hooks.each do |klass, args, block|
+            builder.use(klass, *args, &block)
+          end
         end
 
         # Before hooks

test/unit/vagrant/action/hook_test.rb

@@ -97,5 +97,24 @@ describe Vagrant::Action::Hook do
         ["9", [], nil]
       ]
     end
+
+    it "should not prepend or append if disabled" do
+      builder.use("3")
+      builder.use("8")
+
+      subject.prepend("1", 2)
+      subject.append("9")
+      subject.after("3", "4")
+      subject.before("8", "7")
+
+      subject.apply(builder, no_prepend_or_append: true)
+
+      builder.stack.should == [
+        ["3", [], nil],
+        ["4", [], nil],
+        ["7", [], nil],
+        ["8", [], nil]
+      ]
+    end
   end
 end