Update onos.sh to generate ramcloud.conf, etc.

- Generate conf/ramcloud.conf
- Specify ramcloud config file when starting ONOS core
- Changed ZooKeeper log dir to onos-log/`hostname`
  Note: Currently log filename cannot be modified using env. variable, etc.
- Changed default ramcloud.conf address to 127.0.0.1
- Changed hazelcast default in onos_node.conf to tcp + 127.0.0.1
- Put our path first in LD_LIBRARY_PATH

Change-Id: I53e8dec0e659f12ffae609354675ff73188757e3
diff --git a/conf/.gitignore b/conf/.gitignore
index 6fc1c11..f30287b 100644
--- a/conf/.gitignore
+++ b/conf/.gitignore
@@ -1,2 +1,3 @@
 *.bak
 zoo.cfg
+onos_node.*.conf