Changed default onos user password.

Change-Id: I3ee98c46d0ae8ee648b9c648b92eecd36dc83383
diff --git a/tools/package/etc/users.properties b/tools/package/etc/users.properties
index 60aa1a3..9f7a266 100644
--- a/tools/package/etc/users.properties
+++ b/tools/package/etc/users.properties
@@ -30,5 +30,5 @@
 # with the name "karaf".
 #
 karaf = karaf,_g_:admingroup
-onos = onos,_g_:admingroup
+onos = rocks,_g_:admingroup
 _g_\:admingroup = group,admin,manager,viewer,webconsole