Update docker script default to docker prune volumes
What does this MR do?
A follow-up MR to correct the script docker_cleanup_script default from new to prune-volumes
Why was this MR needed?
The current default is set as new which is not any of the available options. This fix will correct this bug
What's the best way to test this MR?
Same as explained in the #2310
What are the relevant issue numbers?
Edited by Silvester Wainaina