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/SRDhcprelay/dependencies/host/v6.host b/TestON/tests/USECASE/SegmentRouting/SRDhcprelay/dependencies/host/v6.host
new file mode 100644
index 0000000..7241b17
--- /dev/null
+++ b/TestON/tests/USECASE/SegmentRouting/SRDhcprelay/dependencies/host/v6.host
@@ -0,0 +1,16 @@
+{
+    "onos":
+    {
+        "00:BB:00:00:00:01/None": "2000::201",
+        "00:BB:00:00:00:02/None": "2000::202",
+        "00:BB:00:00:00:03/None": "2000::301",
+        "00:BB:00:00:00:04/None": "2000::302"
+    },
+    "network":
+    {
+        "h1v6": "2000::201",
+        "h2v6": "2000::202",
+        "h3v6": "2000::301",
+        "h4v6": "2000::302"
+    }
+}