REGTEST: make the IP+port logging test more reliable

On my machine, test log/b00000.vtc fails ~9/10 times. Apparently, the
connection is often marked as reset before the timeout strikes, so the
log shows "CD" flags instead of "cD". This fix does two things :
  1) shorten the client timeout to 1 millisecond instead of 5
  2) accept both "cD" and "CD" as valid termination states since the
     purpose is to validate the source address and port, and not the
     status itself.

reg-tests/log/b00000.vtc

@@ -30,7 +30,7 @@ syslog Slg_1 -level notice {
     recv
     recv
     recv info
-    expect ~ \"dip\":\"${h1_fe_1_addr}\",\"dport\":\"${h1_fe_1_port}.*\"ts\":\"cD\",\"
+    expect ~ \"dip\":\"${h1_fe_1_addr}\",\"dport\":\"${h1_fe_1_port}.*\"ts\":\"[cC]D\",\"
 } -start
 
 haproxy h1 -conf {
@@ -40,7 +40,7 @@ haproxy h1 -conf {
 defaults
     log global
     timeout connect 3000
-    timeout client 5
+    timeout client 1
     timeout server  10000
 
 frontend fe1