Modified onos.sh so that Hazelcast port can be configured.

Change-Id: I0152f8361dc51899db412014058a77ff3ab5752e

Modified onos.sh to use utils.sh functions.
Fixed onos-cluster.sh potential strings bug.

Change-Id: I41dbf22801f697567658d4201b80da7917f2160f
diff --git a/conf/template/hazelcast.xml.template b/conf/template/hazelcast.xml.template
index 77db87c..b23c7e9 100644
--- a/conf/template/hazelcast.xml.template
+++ b/conf/template/hazelcast.xml.template
@@ -89,7 +89,7 @@
   </topic>
 
   <network>
-    <port auto-increment="true">5701</port>
+    <port auto-increment="true">__HC_PORT__</port>
     <join>
 __HC_NETWORK__
       <aws enabled="false">