[ONOS-7104]: Fixing style check errors in core dir of TestON

Change-Id: Ia50ae6542b141ebe857d3c42b52bd165969664e6
diff --git a/TestON/core/Thread.py b/TestON/core/Thread.py
index 4c040a6..0907dd8 100644
--- a/TestON/core/Thread.py
+++ b/TestON/core/Thread.py
@@ -38,8 +38,8 @@
             if self.target is not None:
                 self.result = self.target( *self.args, **self.kwargs )
         except Exception as e:
-            print "ThreadID:" + str( self.threadID ) + ", Name:" +\
-                  self.name + "- something went wrong with " +\
-                  str( self.target.im_class ) + "." +\
+            print "ThreadID:" + str( self.threadID ) + ", Name:" + \
+                  self.name + "- something went wrong with " + \
+                  str( self.target.im_class ) + "." + \
                   str( self.target.im_func ) + " method: "
             print e