Use python2 in ovs_parse_bridge.py

ovsdbapp is not present in python3

Change-Id: If015f681514af719575409cc55961ec2a1ec1fdc
Related-PROD: PROD-34695
diff --git a/telegraf/files/script/ovs_parse_bridge.py b/telegraf/files/script/ovs_parse_bridge.py
index 76c34ca..1f47aff 100644
--- a/telegraf/files/script/ovs_parse_bridge.py
+++ b/telegraf/files/script/ovs_parse_bridge.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 
 '''
 Check status description: