driver: little cleanup after LXC 1.0+ requirement bump

The conditional `lxc-version` and `lxc-config` mechanisms aren't needed
anymore. They were for pre-1.0 LXC versions.

lib/vagrant-lxc/driver.rb

@@ -17,8 +17,6 @@ module Vagrant
       class ContainerNotFound < StandardError; end
 
       # Default root folder where container configs are stored
-      DEFAULT_CONTAINERS_PATH = '/var/lib/lxc'
-
       attr_reader :container_name,
                   :customizations
 
@@ -36,7 +34,7 @@ module Vagrant
 
       # Root folder where container configs are stored
       def containers_path
-        @containers_path ||= @cli.support_config_command? ? @cli.config('lxc.lxcpath') : DEFAULT_CONTAINERS_PATH
+        @containers_path ||= @cli.config('lxc.lxcpath')
       end
 
       def all_containers

lib/vagrant-lxc/driver/cli.rb

@@ -29,7 +29,7 @@ module Vagrant
 
         def version
           return @version if @version
-          @version = support_version_command? ? run(:version) : run(:create, '--version')
+          @version = run(:create, '--version')
           if @version =~ /(lxc version:\s+|)(.+)\s*$/
             @version = $2.downcase
           else
@@ -39,11 +39,7 @@ module Vagrant
         end
 
         def config(param)
-          if support_config_command?
+          run(:config, param).gsub("\n", '')
-            run(:config, param).gsub("\n", '')
-          else
-            raise Errors::CommandNotSupported, name: 'config', available_version: '> 1.x.x', version: version
-          end
         end
 
         def state
@@ -155,16 +151,6 @@ module Vagrant
           return @supports_attach
         end
 
-        def support_config_command?
-          version[0].to_i >= 1
-        end
-
-        def support_version_command?
-          @sudo_wrapper.run('which', 'lxc-version').strip.chomp != ''
-        rescue Vagrant::LXC::Errors::ExecuteError
-          return false
-        end
-
         private
 
         def run(command, *args)

spec/unit/driver/cli_spec.rb

@@ -30,16 +30,7 @@ describe Vagrant::LXC::Driver::CLI do
 
   describe 'version' do
     before do
-      allow(subject).to receive(:support_version_command?).and_return(true)
+      allow(subject).to receive(:run).with(:create, '--version').and_return(lxc_version_out)
-      allow(subject).to receive(:run).with(:version).and_return(lxc_version_out)
-    end
-
-    describe 'lxc version before 1.x.x' do
-      let(:lxc_version_out) { "lxc version:  0.x.y-rc1\n" }
-
-      it 'parses the version from the output' do
-        expect(subject.version).to eq('0.x.y-rc1')
-      end
     end
 
     describe 'lxc version after 1.x.x' do
@@ -53,24 +44,11 @@ describe Vagrant::LXC::Driver::CLI do
 
   describe 'config' do
     before do
-      allow(subject).to receive(:support_version_command?).and_return(support_version_command?)
       allow(subject).to receive(:run).with(:config, 'lxc.lxcpath').and_return(lxc_config_out)
-      allow(subject).to receive(:run).with(:version).and_return(lxc_version_out)
       allow(subject).to receive(:run).with(:create, '--version').and_return(lxc_version_out)
     end
 
-    describe 'lxc version before 1.x.x' do
+    describe 'lxc version after 1.x.x'do
-      let(:support_version_command?) { true }
-      let(:lxc_config_out)           { "/var/lib/lxc\n" }
-      let(:lxc_version_out)          { "lxc version:  0.x.y-rc1\n" }
-
-      it 'not supported' do
-        expect{subject.config('lxc.lxcpath')}.to raise_error(Vagrant::LXC::Errors::CommandNotSupported)
-      end
-    end
-
-    describe 'lxc version before after 1.x.x'do
-      let(:support_version_command?) { false }
       let(:lxc_config_out)           { "/var/lib/lxc\n" }
       let(:lxc_version_out)          { "1.0.0\n" }
 

spec/unit/driver_spec.rb

@@ -89,7 +89,7 @@ describe Vagrant::LXC::Driver do
   describe 'start' do
     let(:customizations)         { [['a', '1'], ['b', '2']] }
     let(:internal_customization) { ['internal', 'customization'] }
-    let(:cli)                    { double(Vagrant::LXC::Driver::CLI, start: true, support_config_command?: false) }
+    let(:cli)                    { double(Vagrant::LXC::Driver::CLI, start: true) }
     let(:sudo)                   { double(Vagrant::LXC::SudoWrapper) }
 
     subject { described_class.new('name', sudo, cli) }
@@ -99,6 +99,7 @@ describe Vagrant::LXC::Driver do
         and_return('# CONFIGURATION')
       sudo.should_receive(:run).twice.with('cp', '-f', %r{/(run|tmp)/.*}, '/var/lib/lxc/name/config')
       sudo.should_receive(:run).twice.with('chown', 'root:root', '/var/lib/lxc/name/config')
+      expect(cli).to receive(:config).with("lxc.lxcpath").and_return("/var/lib/lxc")
 
       subject.customizations << internal_customization
       subject.start(customizations)
@@ -152,21 +153,11 @@ describe Vagrant::LXC::Driver do
   end
 
   describe 'containers_path' do
-    let(:cli) { double(Vagrant::LXC::Driver::CLI, config: cli_config_value, support_config_command?: cli_support_config_command_value) }
+    let(:cli) { double(Vagrant::LXC::Driver::CLI, config: cli_config_value) }
 
     subject { described_class.new('name', nil, cli) }
 
-    describe 'lxc version before 1.x.x' do
-      let(:cli_support_config_command_value) { false }
-      let(:cli_config_value)                 { '/var/lib/lxc' }
-
-      it 'delegates to cli' do
-        expect(subject.containers_path).to eq(cli_config_value)
-      end
-    end
-
     describe 'lxc version after 1.x.x' do
-      let(:cli_support_config_command_value) { true }
       let(:cli_config_value)                 { '/etc/lxc' }
 
       it 'delegates to cli' do