Added README to cluster management tools.

Change-Id: Iddbf15b5ca9925b230c97e9a0a6d34c54ec6a97e

Fixed a bug onos-cluster.sh doesn't set RAMCloud coordinator address correctly.
Segregated onos-cluster.sh output directory from cluster-mgmt/conf/.

Change-Id: Icf108a445133a145f565b0e72a4c819d42f6df47
diff --git a/cluster-mgmt/conf/onos-cluster.conf b/cluster-mgmt/conf/onos-cluster.conf
index ddf99b2..cf2cab1 100644
--- a/cluster-mgmt/conf/onos-cluster.conf
+++ b/cluster-mgmt/conf/onos-cluster.conf
@@ -4,8 +4,8 @@
 cluster.hosts.names = onosdev1, onosdev2, onosdev3, onosdev4
 
 # Back-end module to store topology/flows
-cluster.hosts.backend = hazelcast
-#cluster.hosts.backend = ramcloud
+#cluster.hosts.backend = hazelcast
+cluster.hosts.backend = ramcloud
 
 # Protocol used by RAMCloud cluster (fast+udp by default)
 #cluster.hosts.ramcloud.protocol = fast+udp
@@ -57,8 +57,8 @@
 
 ### SSH settings used for delivering config files ###
 # Common username used to login host (current user by default)
-#remote.common.ssh.user = mininet
+#remote.common.ssh.user = onos
 
 # Host-specific username settings
-#remote.onosdev1.ssh.user = mininet
-#remote.onosdev2.ssh.user = mininet
+#remote.onosdev1.ssh.user = onos
+#remote.onosdev2.ssh.user = onos