Update tests for aether pods

- Update test for QA-POD
- SRStaging for testing connecting to Staging pod
- Add some functions for a kubernetes deployed cluster
- Connect to ONOS nodes with kubernetes
- Add option to connect to components through jump hosts
- Fixes for installing ONOS in custom locations
- Invoke python2 instead of python
- If using an ssh agent, also use that for pexpect ssh sessions,
  E.G. Jenkins initiated tests

Change-Id: I1fc345c8eab60a5b00c17e6ed677a63489a74a19
diff --git a/TestON/tests/USECASE/SegmentRouting/SRClusterRestart/dependencies/SRClusterRestartFuncs.py b/TestON/tests/USECASE/SegmentRouting/SRClusterRestart/dependencies/SRClusterRestartFuncs.py
index cead0b4..af86ca8 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRClusterRestart/dependencies/SRClusterRestartFuncs.py
+++ b/TestON/tests/USECASE/SegmentRouting/SRClusterRestart/dependencies/SRClusterRestartFuncs.py
@@ -40,7 +40,8 @@
             main.cfgName = Topo
             main.Cluster.setRunningNode( numNodes )
             run.installOnos( main )
-            run.loadJson( main )
+            if not main.persistentSetup:
+                run.loadJson( main )
             run.loadChart( main )
             if hasattr( main, 'Mininet1' ):
                 run.startMininet( main, 'cord_fabric.py', args=self.topo[ Topo ][ 2 ] )