Add another reason to the regression script error message.

testsuite/expect/test1.29

@@ -242,6 +242,7 @@ if {$matches != $target} {
 	send_user "Check PropagateResourceLimits configuration parameter\n"
 	send_user "Check $file_err for errors\n"
 	send_user "A long running slurmd could cause a file size limit error\n"
+	send_user "slurmd could have been started with limits lower than user launching the task\n"
 	set exit_code 1
 }