[flex counter] Flex counter threads consume too much CPU resources. #…

…9202 (#1925)

* [flex counter] Flex counter threads consume too much CPU resources. #9202

Increase the interval up lmit from 30 seconds to 60 seconds

* only modify the interval of watermark counter group

* fix merge conflict

* fix commit issue

counterpoll/main.py

@@ -203,7 +203,7 @@ def watermark():
     """ Watermark counter commands """
 
 @watermark.command()
-@click.argument('poll_interval', type=click.IntRange(1000, 30000))
+@click.argument('poll_interval', type=click.IntRange(1000, 60000))
 def interval(poll_interval):
     """ Set watermark counter query interval for both queue and PG watermarks """
     configdb = swsssdk.ConfigDBConnector()