to run websphere you need to download
https://developer.ibm.com/wasdev/downloads/liberty-profile-using-non-eclipse-environments/
and tell maven
$ mvn verify -Dwlp.jar=path/to/wlp.jar
where your wlp jar is located.
add to $HOME/.m2/settings.xml
<profiles>
<profile>
<id>wlp</id>
<properties>
<wlp.jar>/path/to/wlp-developers-runtime-8.5.5.1.jar</wlp.jar>
</properties>
</profile>
</profiles>
<activeProfiles>
<activeProfile>wlp</activeProfile>
</activeProfiles>
so whenever you run the tests the webspere tests will run as well