REGTEST: adapt some reg tests after renaming.

Some reg tests and their dependencies have been renamed. They may be
referenced by the .vtc files. So, this patch modifies also the references
to these dependencies.
diff --git a/reg-tests/lua/close_wait_lf.vtc b/reg-tests/lua/close_wait_lf.vtc
index 26e71ad..98492ee 100644
--- a/reg-tests/lua/close_wait_lf.vtc
+++ b/reg-tests/lua/close_wait_lf.vtc
@@ -30,7 +30,7 @@
         timeout connect 1s
 
     global
-        lua-load ${testdir}/b00003.lua
+        lua-load ${testdir}/close_wait_lf.lua
 
     frontend frt
         log ${Slog_addr}:${Slog_port} local0 debug err