Add HA tests

If no OC vars are found, set onosdriver.maxNodes to None

Change-Id: I74ff5762a8399a93084e0d8a2acd11acb8a5f4e5
diff --git a/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.topo b/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.topo
index 795b37a..5f87b9d 100644
--- a/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.topo
+++ b/TestON/tests/HAsingleInstanceRestart/HAsingleInstanceRestart.topo
@@ -7,7 +7,8 @@
             <password>onos_test</password>
             <type>OnosDriver</type>
             <connect_order>1</connect_order>
-            <COMPONENTS> </COMPONENTS>
+            <COMPONENTS>
+            </COMPONENTS>
         </ONOSbench>
 
         <ONOScli1>