Stratum Support for Segement Rounting Suite

- Add Stratum Bmv2 switch support for SRDhcpRelay and SRRouting tests
- Add Support for 0x1 topology on a Stratum Tofino HW switch
- Support for dockerized mininet with Stratum BMv2 switches
- Update scapy driver to work with newer versions of scapy
- Simple parsing for scapy ping output
- Add support for fetching and installing external onos apps
- Add support for onos-diagnostics profiles
- Move onos log levels to params file
- Add onos cfg settings to SR tests

Change-Id: I7c4a71484c8fd5735da9ef09b96d8990283b199b
(cherry picked from commit bef6d9bd943996483fed32130cb30ad26a06aac0)
diff --git a/TestON/tests/dependencies/Cluster.py b/TestON/tests/dependencies/Cluster.py
index 7e850ba..9ed9256 100644
--- a/TestON/tests/dependencies/Cluster.py
+++ b/TestON/tests/dependencies/Cluster.py
@@ -676,10 +676,14 @@
         # multiplier is somewhat arbitrary, but the idea is the logs would have
         # been compacted before this many segments are written
 
-        maxSize = float( segmentSize ) * float( multiplier )
-        ret = True
-        for n in self.runningNodes:
-            # Partition logs
-            ret = ret and n.server.folderSize( "/opt/atomix/data/raft/partitions/*/*.log",
-                                               size=maxSize, unit=units, ignoreRoot=False )
-        return ret
+        try:
+            maxSize = float( segmentSize ) * float( multiplier )
+            ret = True
+            for n in self.runningNodes:
+                # Partition logs
+                ret = ret and n.server.folderSize( "/opt/atomix/data/raft/partitions/*/*.log",
+                                                   size=maxSize, unit=units, ignoreRoot=False )
+            return ret
+        except Exception as e:
+            main.log.error( e )
+            main.log.error( repr( e ) )