Handle IndexError when counting flow numbers

Change-Id: Ib42f651be1c5efe1d0bc2916f9cec534d2d6e0bd
diff --git a/TestON/drivers/common/cli/onosclidriver.py b/TestON/drivers/common/cli/onosclidriver.py
index 41b6c24..8d6a65b 100755
--- a/TestON/drivers/common/cli/onosclidriver.py
+++ b/TestON/drivers/common/cli/onosclidriver.py
@@ -2813,6 +2813,10 @@
                 return None
             return totalFlows
 
+        except IndexError:
+            main.log.exception( "{}: Object not as expected!".format( self.name ) )
+            main.log.debug( "rawFlows: {}".format( rawFlows ) )
+            return None
         except ( TypeError, ValueError ):
             main.log.exception( "{}: Object not as expected!".format( self.name ) )
             return None