THRIFT-2693 Erlang test leaves a lot of generated files

Patch: Roger Meier
diff --git a/lib/erl/test/test_client.erl b/lib/erl/test/test_client.erl
index 59f596d..79708ca 100644
--- a/lib/erl/test/test_client.erl
+++ b/lib/erl/test/test_client.erl
@@ -21,7 +21,7 @@
 
 -export([start/0, start/1]).
 
--include("thriftTest_types.hrl").
+-include("gen-erl/thriftTest_types.hrl").
 
 -record(options, {port = 9090,
                   client_opts = []}).