Merge pull request DataDog#381 from rothgar/apm_footer_test

Add test for apm footer to not apply template if = empty string

Author: truthbk

manifests/init.pp

@@ -463,10 +463,12 @@
       $apm_footer_order = '06'
     }
 
-    concat::fragment{ 'datadog apm footer':
-      target  => '/etc/dd-agent/datadog.conf',
-      content => template('datadog_agent/datadog_apm_footer.conf.erb'),
-      order   => $apm_footer_order,
+    if ($apm_enabled == true) and ($apm_env != '') {
+      concat::fragment{ 'datadog apm footer':
+        target  => '/etc/dd-agent/datadog.conf',
+        content => template('datadog_agent/datadog_apm_footer.conf.erb'),
+        order   => $apm_footer_order,
+      }
     }
   } else {