Add memory leak unit test for GridFTP.

testing/btest/core/leaks/gridftp.test

@@ -0,0 +1,24 @@
+# Needs perftools support.
+#
+# @TEST-REQUIRES: bro  --help 2>&1 | grep -q mem-leaks
+#
+# @TEST-GROUP: leaks
+#
+# @TEST-EXEC: HEAP_CHECK_DUMP_DIRECTORY=. HEAPCHECK=local bro -m -r $TRACES/globus-url-copy.trace %INPUT
+
+@load base/protocols/ftp/gridftp
+
+module GridFTP;
+
+redef size_threshold = 2;
+
+redef enum Notice::Type += {
+    Data_Channel
+};
+
+event GridFTP::data_channel_detected(c: connection)
+	{
+	local msg = fmt("GridFTP data channel over threshold %d bytes",
+	                size_threshold);
+	NOTICE([$note=Data_Channel, $msg=msg, $conn=c]);
+	}