Switch to Chefstyle and don't ship the changelog

No need for the changelog in an artifact
Using chefstyle avoids the need to constantly chase rubocop updates

Signed-off-by: Tim Smith <tsmith@chef.io>

.travis.yml

@@ -1,5 +1,5 @@
 language: ruby
 sudo: false
 rvm:
- - 2.4.4
- - 2.5.1
+ - 2.4.5
+ - 2.5.3

Gemfile

@@ -1,3 +1,3 @@
-source 'https://rubygems.org'
-gem 'simplecov'
+source "https://rubygems.org"
+gem "simplecov"
 gemspec

Rakefile

@@ -1,4 +1,5 @@
-require 'rubocop/rake_task'
+require "rubocop/rake_task"
+require "chefstyle"
 
 RuboCop::RakeTask.new
 

kitchen-azurerm.gemspec

@@ -1,24 +1,24 @@
-lib = File.expand_path('lib', __dir__)
+lib = File.expand_path("lib", __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 Gem::Specification.new do |spec|
-  spec.name          = 'kitchen-azurerm'
-  spec.version       = '0.14.5'
-  spec.authors       = ['Stuart Preston']
-  spec.email         = ['stuart@chef.io']
-  spec.summary       = 'Test Kitchen driver for Azure Resource Manager.'
-  spec.description   = 'Test Kitchen driver for the Microsoft Azure Resource Manager (ARM) API'
-  spec.homepage      = 'https://github.com/test-kitchen/kitchen-azurerm'
-  spec.license       = 'Apache-2.0'
+  spec.name          = "kitchen-azurerm"
+  spec.version       = "0.14.5"
+  spec.authors       = ["Stuart Preston"]
+  spec.email         = ["stuart@chef.io"]
+  spec.summary       = "Test Kitchen driver for Azure Resource Manager."
+  spec.description   = "Test Kitchen driver for the Microsoft Azure Resource Manager (ARM) API"
+  spec.homepage      = "https://github.com/test-kitchen/kitchen-azurerm"
+  spec.license       = "Apache-2.0"
 
-  spec.files         = Dir['LICENSE', 'README.md', 'CHANGELOG.md', 'lib/**/*', 'templates/**/*']
-  spec.require_paths = ['lib']
+  spec.files         = Dir["LICENSE", "README.md", "lib/**/*", "templates/**/*"]
+  spec.require_paths = ["lib"]
 
-  spec.add_dependency 'azure_mgmt_network', '~> 0.15', '>= 0.15.0'
-  spec.add_dependency 'azure_mgmt_resources', '~> 0.15', '>= 0.15.0'
-  spec.add_dependency 'inifile', '~> 3.0', '>= 3.0.0'
-  spec.add_dependency 'sshkey', '~> 1', '>= 1.0.0'
+  spec.add_dependency "azure_mgmt_network", "~> 0.15", ">= 0.15.0"
+  spec.add_dependency "azure_mgmt_resources", "~> 0.15", ">= 0.15.0"
+  spec.add_dependency "inifile", "~> 3.0", ">= 3.0.0"
+  spec.add_dependency "sshkey", "~> 1", ">= 1.0.0"
 
-  spec.add_development_dependency 'bundler', '~> 1.7'
-  spec.add_development_dependency 'rake', '~> 11.0'
-  spec.add_development_dependency 'rubocop', '~> 0.58', '>= 0.58.1'
+  spec.add_development_dependency "bundler", "~> 1.7"
+  spec.add_development_dependency "rake", ">= 11.0"
+  spec.add_development_dependency "chefstyle"
 end