Merge pull request #205 from mcasper/improve_report_error_message

Update the report config file check to account for permissions

Author: truthbk

lib/puppet/reports/datadog_reports.rb

@@ -10,7 +10,7 @@
 Puppet::Reports.register_report(:datadog_reports) do
 
   configfile = "/etc/dd-agent/datadog.yaml"
-  raise(Puppet::ParseError, "Datadog report config file #{configfile} not readable") unless File.exist?(configfile)
+  raise(Puppet::ParseError, "Datadog report config file #{configfile} not readable") unless File.readable?(configfile)
   config = YAML.load_file(configfile)
   API_KEY = config[:datadog_api_key]