Add Stratum support for SRDynamicConf

- Add bmv2 switch support to cord_fabric topo file
- Fix some error handling for SR tests
- Updating testcases to run for SR Stratum tests
- Fix Tost-ONOS docker image tag for onos-2.2
- Update make command for changed variable names
- Fix expected hosts files for SRDhcprelay
    - Fix case 12 config
    - Add config for cases 3 and 4
    - Create generic files

Change-Id: I39d499baaf69eb047e261fd2d6b6f2e846707719
(cherry picked from commit c15b8dfb3093c1b693ea05227ada9a9f1c6d4afb)
diff --git a/TestON/tests/USECASE/SegmentRouting/SRHighAvailability/dependencies/SRHAFuncs.py b/TestON/tests/USECASE/SegmentRouting/SRHighAvailability/dependencies/SRHAFuncs.py
index 9169573..0c4bc07 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRHighAvailability/dependencies/SRHAFuncs.py
+++ b/TestON/tests/USECASE/SegmentRouting/SRHighAvailability/dependencies/SRHAFuncs.py
@@ -72,14 +72,11 @@
             # TODO Dynamic config of vlan xconnect
             # TODO Vrouter integration
             # TODO Mcast integration
-            if hasattr( main, 'Mininet1' ):
-                run.cleanup( main )
-            else:
-                # TODO: disconnect TestON from the physical network
-                pass
         except Exception as e:
             main.log.exception( "Error in runTest" )
             main.skipCase( result="FAIL", msg=e )
+        finally:
+            run.cleanup( main )
 
     def generateDescription( self, isRandom, isKillingSwitch ):
         return "ONOS " + ( "random " if isRandom else "" ) + "failures" +\