Added RAMCloud replication parameter to cluster script.
Modified onos.sh so that RAMCloud host parameter falls back to hostname.
Added usage for "deldb" option to onos.sh.
Added interactive confirmation of deldb to onos.sh.

Change-Id: Icf7022574758bc544d1e2f85abc0f83a7e8e48d8
diff --git a/conf/onos_node.conf b/conf/onos_node.conf
index 75f9aa0..8215ce4 100644
--- a/conf/onos_node.conf
+++ b/conf/onos_node.conf
@@ -25,7 +25,7 @@
 # Protocol used by RAMCloud coordinator (fast+udp by default)
 #ramcloud.coordinator.protocol = fast+udp
 
-# IP address of RAMCloud coordinator (host.ip by default)
+# Listening address of RAMCloud coordinator (host.ip or 0.0.0.0 by default)
 #ramcloud.coordinator.ip = 127.0.0.1
 
 # Port number of RAMCloud coordinator (12246 by default)
@@ -38,7 +38,7 @@
 # Protocol used by RAMCloud server (fast+udp by default)
 #ramcloud.server.protocol = fast+udp
 
-# IP address of RAMCloud server (host.ip by default)
+# Listening address of RAMCloud server (host.ip or 0.0.0.0 by default)
 #ramcloud.server.ip = 127.0.0.1
 
 # Port number of RAMCloud server (12242 by default)