Stop execution if wakamiti error is thrown

[mgalbis]

Sometimes, errors are triggered in Wakamiti (ERROR) that are unrelated to application failures (FAILED). The execution doesn't stop until all scenarios have finished running, and it doesn't make much sense to continue if Wakamiti configuration errors are occurring.

It is proposed to include a configuration parameter that allows terminating the execution if any Wakamiti error occurs or to terminate it by default.