Fixed some XML syntax issues in the test data

Also, make the ftp server return a canned response that doesn't
cause XML verification problems.  Although the test file format
isn't technically XML, it's still handy to be able to use XML
tools to verify and manipulate them.

tests/data/test1900

@@ -49,6 +49,7 @@ http://%HOSTIP:%HTTPPIPEPORT/
 0 1k.txt
 0 1k.txt
 0 1k.txt
+</file>
 </client>
 
 # Verify data after the test has been "shot"