How to run Scala Unit and Integration tests from Maven

Question

I'm trying to set up Maven so that it can run both Unit and Integration tests using scalatest-maven-plugin, but I can't quite work out how to configure the plugin.

In source code terms my Unit tests are in files called _____Test.scala and the Integration tests will be in files called _____IntegrationTest.scala

If this were Java I would configure the maven-surefire-plugin as:

<execution>
    <goals>
        <goal>test</goal>
    </goals>
    <configuration>
        <excludes>
            <exclude>**/*IntegrationTest.java</exclude>
        </excludes>
    </configuration>
</execution>

and the maven-failsafe-plugin as

<execution>
    <goals>
        <goal>integration-test</goal>
    </goals>
    <configuration>
        <includes>
            <include>**/*IntegrationTest.java</include>
        </includes>
    </configuration>
</execution>

I want to do the same for the scalatest-maven-plugin, but with a different execution for for the Unit and Integration phases. My problem is that the includes and excludes configuration elements are not recognised by the plug-in. With out them I'm going to end up with all tests being run in all maven phases.

The author of this question appears to have had a similar problem, but there isn't an answer.