Fix puppet-lint configuration

Rakefile

@@ -2,10 +2,11 @@ require 'puppetlabs_spec_helper/rake_tasks'
 require 'puppet-lint/tasks/puppet-lint'
 
 Rake::Task[:lint].clear
-PuppetLint.configuration.fail_on_warnings
-PuppetLint.configuration.send('relative')
-PuppetLint.configuration.send('disable_80chars')
-PuppetLint.configuration.ignore_paths = ["spec/**/*.pp", "pkg/**/*.pp", "vendor/**/*.pp"]
+PuppetLint::RakeTask.new :lint do |config|
+  config.ignore_paths = ["spec/**/*.pp", "pkg/**/*.pp", "vendor/**/*.pp"]
+  config.disable_checks = ['80chars']
+  config.fail_on_warnings = true
+end
 
 PuppetSyntax.exclude_paths = ["spec/fixtures/**/*.pp", "vendor/**/*"]