Add lint:ci task

Rakefile

@@ -17,3 +17,33 @@ task :validate do
     sh "erb -P -x -T '-' #{template} | ruby -c"
   end
 end
+
+namespace :lint do 
+  desc "Check puppet module code style."
+  task :ci do
+    begin
+      require 'puppet-lint'
+    rescue LoadError
+      fail 'Cannot load puppet-lint, did you install it?'
+    end
+ 
+    linter = PuppetLint.new
+    linter.configuration.log_format =
+        '%{path}:%{linenumber}:%{check}:%{KIND}:%{message}'
+ 
+    lintrc = ".puppet-lint.rc"
+    if File.file?(lintrc)
+      File.read(lintrc).each_line do |line|
+        check = line.sub(/--no-([a-zA-Z0-9_]*)-check/, '\1').chomp
+        linter.configuration.send("disable_#{check}")
+      end
+    end
+ 
+    FileList['manifests/**/*.pp','modules/**/*.pp'].exclude(/fixtures/).each do |puppet_file|
+      linter.file = puppet_file
+      linter.run
+      linter.print_problems
+    end
+  end
+end
+