Merge pull request #1055 from optiz0r/undef_fix

Fix undef comparison in rabbitmq-env.conf template

Author: bastelfreak

templates/rabbitmq-env.conf.epp

@@ -1,5 +1,5 @@
 <% $rabbitmq::config::environment_variables.keys.sort.each |$k| { -%>
-  <%- unless $rabbitmq::config::environment_variables[$k] == Undef {-%>
+  <%- unless $rabbitmq::config::environment_variables[$k] =~ Undef {-%>
 <%= $k %>=<%= $rabbitmq::config::environment_variables[$k] %>
   <%-} -%>
 <% } -%>