add lint rake task with robocop and fix issues

Gemfile

@@ -2,3 +2,4 @@ source 'https://rubygems.org'
 
 gem 'rake'
 gem 'serverspec'
+gem 'rubocop',    '~> 0.18.1'

Rakefile

@@ -1,6 +1,18 @@
 require 'rake'
 require 'rspec/core/rake_task'
+require 'rubocop/rake_task'
 
+# Rubocop
+desc 'Run Rubocop lint checks'
+task :rubocop do
+  Rubocop::RakeTask.new
+end
+
+# Lint the cookbook
+desc "Run linters"
+task :lint => [ :rubocop ]
+
+# Serverspec tests
 suites = Dir.glob('*').select{|entry| File.directory?(entry) }
 
 class ServerspecTask < RSpec::Core::RakeTask

default/serverspec/spec_helper.rb

@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 if ENV['STANDALONE_SPEC']
 
   require 'serverspec'

default/serverspec/sysctl_spec.rb

@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 require 'spec_helper'
 
 RSpec.configure do |c|

modules_disabled/serverspec/modules_spec.rb

@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 require 'spec_helper'
 
 describe 'preloaded modules' do

modules_disabled/serverspec/spec_helper.rb

@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 require 'serverspec'
 require 'pathname'
 

modules_disabled/serverspec/sysctl_spec.rb

@@ -1,3 +1,5 @@
+# encoding: utf-8
+
 require 'spec_helper'
 
 describe 'System sysctl' do