Respect Vagrantfile options to disable forwarded port

Closes GH-149

CHANGELOG.md

@@ -3,6 +3,7 @@
 IMPROVEMENTS:
 
   - Warn users about unsupported private / public networking configs [#154](https://github.com/fgrehm/vagrant-lxc/issues/154)
+  - Respect Vagrantfile options to disable forwarded port [#149](https://github.com/fgrehm/vagrant-lxc/issues/149)
 
 BUG FIXES:
 

lib/vagrant-lxc/action/forward_ports.rb

@@ -63,6 +63,9 @@ module Vagrant
           mappings = {}
 
           config.vm.networks.each do |type, options|
+            next if options[:disabled]
+
+            # TODO: Deprecate this behavior of "automagically" skipping ssh forwarded ports
             if type == :forwarded_port && options[:id] != 'ssh'
               options.delete(:host_ip) if options.fetch(:host_ip, '').to_s.strip.empty?
               mappings[options[:host]] = options

spec/unit/action/forward_ports_spec.rb

@@ -63,6 +63,13 @@ describe Vagrant::LXC::Action::ForwardPorts do
     pid_file.should == pid
   end
 
+  it 'allows disabling a previously forwarded port' do
+    forward_conf[:disabled] = true
+    subject.stub(system: true)
+    subject.call(env)
+    subject.should_not have_received(:spawn)
+  end
+
   it 'raises RedirNotInstalled error if `redir` is not installed' do
     subject.stub(system: false)
     lambda { subject.call(env) }.should raise_error(Vagrant::LXC::Errors::RedirNotInstalled)