REGTEST: lua/b00003: Relax the regex matching the log message

The timeer TR may be greater than 10ms, making the test fails.
diff --git a/reg-tests/lua/b00003.vtc b/reg-tests/lua/b00003.vtc
index 75cdd7d..f58229b 100644
--- a/reg-tests/lua/b00003.vtc
+++ b/reg-tests/lua/b00003.vtc
@@ -20,7 +20,7 @@
 
 syslog Slog -level info -repeat 100 {
     recv info
-    expect ~ "[^:\\[ ]\\[${h1_pid}\\]: Ta=[0-9]* Tc=[0-9]* Td=[0-9]* Th=[0-9]* Ti=[0-9]* Tq=[0-9]* TR=[0-9] Tr=[0-9]* Tt=[0-9]* Tw=[0-9]*"
+    expect ~ "[^:\\[ ]\\[${h1_pid}\\]: Ta=[0-9]* Tc=[0-9]* Td=[0-9]* Th=[0-9]* Ti=[0-9]* Tq=[0-9]* TR=[0-9]* Tr=[0-9]* Tt=[0-9]* Tw=[0-9]*"
 } -start
 
 haproxy h1 -conf {