cv32e40p riscof default config change for sail model to run without docker
requested to merge github/fork/dd-vaibhavjain/cv32e40p/dev_vja_riscof_non_docker_sail into cv32e40p/dev
Created by: dd-vaibhavjain
This PR is for changes to modify the default riscof sail model config to run without docker.
Earlier we had made the default config to run with docker. But going forward we wanted to reverse this and use the more general solution of running SAIL model from a local installation without the need of docker. Also since we were not able to verify this flow previously, it had minor issues which required a small update to the sail python plugin. README also updated to indicate this change in default config for Sail. This is just default config change, internally now flow supports both mechanisms.