Make rerun the default for execution_mode=test

[arjunsuresh]

I think we should make rerun the default for execution_mode=test

[anandhu-eng]

I don't see any concerns against it.

[anandhu-eng]

Based on a recent sync regarding this issue, it was decided not to include this option in the script, as it could create confusion for users. Instead, the --rerun flag will be mentioned on the documentation website wherever the execution mode is set to test.

The commit for this change can be found here

[anandhu-eng]

Closing as the changes has already been merged