adjust test server logging to only log JSON-RPC transmissions

Author: arthurblake

testlogging.properties

@@ -28,8 +28,14 @@ handlers= java.util.logging.ConsoleHandler
 # setting to limit messages printed to the console.
 .level= INFO
 
-# log ALL jabsorb debug stuff (this could be very voluminous)
-org.jabsorb.level=FINE
+# uncomment this line to log ALL jabsorb debug stuff (very voluminous)
+#org.jabsorb.level=FINE
+
+# log all jabsorb INFO level
+org.jabsorb.level=INFO
+
+# log json-rpc messages
+org.jabsorb.JSONRPCServlet.level=FINE
 
 ############################################################
 # Handler specific properties.