Parallelizing tests run with Surefire and Failsafe plugins

In our Maven pom and the build pipeline, we have separated fast unit tests from slow integration tests into separate suites (based on filename inclusion and exclusion patterns) as described [here](https://www.petrikainulainen.net/programming/maven/integration-testing-with-maven/). Unit tests are run with the Surefire plugin and integration tests are run with the Failsafe plugin.

I cannot seem to be able to configure parallel-test-executor-plugin to only read Surefire or Failsafe tests results. Therefore parallel-test-executor-plugin tells Maven to run a mix of unit and integration tests.

Any thoughts?