Update Gemfile and Rakefile

Disable Rubocop for now...

Gemfile

 source 'https://rubygems.org'
 
-gem 'puppet', ENV.key?('PUPPET_VERSION') ? "~> #{ENV['PUPPET_VERSION']}" : '>= 2.7'
-gem 'rspec-puppet', '>= 2.0'
-gem 'puppetlabs_spec_helper', '>= 0.1.0'
-gem 'puppet-lint', '>= 1'
+ENV['PUPPET_VERSION'] = '>= 3.8' unless ENV.key?('PUPPET_VERSION')
+
+gem 'puppet', ENV['PUPPET_VERSION']
+
 gem 'facter', '>= 1.7.0'
-gem 'rspec-puppet-facts', :require => false
+gem 'metadata-json-lint'
+gem 'puppet-lint', '>= 1'
+gem 'puppetlabs_spec_helper', '>= 0.1.0'
+gem 'rspec-puppet', '>= 2.0'
+gem 'rspec-puppet-facts', require: false
 
-gem 'puppet-lint-strict_indent-check'
 gem 'puppet-lint-absolute_classname-check'
+gem 'puppet-lint-classes_and_types_beginning_with_digits-check'
 gem 'puppet-lint-leading_zero-check'
+gem 'puppet-lint-strict_indent-check'
 gem 'puppet-lint-trailing_comma-check'
-gem 'puppet-lint-version_comparison-check'
-gem 'puppet-lint-classes_and_types_beginning_with_digits-check'
 gem 'puppet-lint-unquoted_string-check'
 gem 'puppet-lint-variable_contains_upcase'
-  
-gem 'metadata-json-lint'
+gem 'puppet-lint-version_comparison-check'
 
-gem 'rubocop-rspec', '~> 1.6', :require => false if RUBY_VERSION >= '2.3.0'
+gem 'rubocop-rspec', '~> 1.6', require: false if RUBY_VERSION >= '2.3.0'

Rakefile

@@ -15,4 +15,4 @@ PuppetLint::RakeTask.new :lint do |config|
   config.ignore_paths = PuppetLint.configuration.ignore_paths
 end
 
-task all: [:validate, :lint, :spec, :rubocop]
+task all: [:validate, :lint, :spec]