Add RAMCloud transport timeout option.

- This option might be used as part of ONOS-1245

Change-Id: Ice5fb8dbe9891a77e6d86bfb9822101fa381d32d
diff --git a/conf/onos_node.conf b/conf/onos_node.conf
index 8215ce4..81319c3 100644
--- a/conf/onos_node.conf
+++ b/conf/onos_node.conf
@@ -19,9 +19,12 @@
 # myid will be assigned incrementally according to order of list
 #zookeeper.hosts = onosdev1,onosdev2,onosdev3,onosdev4
 
-# RAMClouod clusterName (ONOS-RC by default)
+# RAMCloud clusterName (ONOS-RC by default)
 #ramcloud.clusterName = ONOS-RC
 
+# RAMCloud transport timeout (1000 by ONOS default)
+#ramcloud.timeout = 1000
+
 # Protocol used by RAMCloud coordinator (fast+udp by default)
 #ramcloud.coordinator.protocol = fast+udp
 
@@ -51,11 +54,13 @@
 #ramcloud.server.logCleanerThreads = 1
 
 # RAMCloud server option detectFailures [0=disabled] (1 by default)
+# Note: Disable this option when running on low performing VM, etc.
 #ramcloud.server.detectFailures = 1
 
 # RAMCloud server option replicas (0 by default)
 # This value must be the same cluster wide.
-# On N node cluster, maximum value will be N-1 replicas
+# On N node cluster, maximum value will be N-1 replicas.
+# A replication factor 2 is probably reasonably safe, 3 is conservative.
 #ramcloud.server.replicas = 0
 
 # RAMCloud server option file (/var/tmp/ramclouddata/backup.`hostname`.log by default)