The required .m2/settings.xml should contain:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<settings xmlns="maven.apache.org/SETTINGS/1.1.0"; xmlns:xsi="w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="maven.apache.org/SETTINGS/1.1.0 maven.apache.org/xsd/settings-1.1.0.xsd">;
<profiles>
<profile>
<id>eap6techpreview</id>
<repositories>
<repository>
<id>eap6techpreview</id>
<name>JBoss Maven Enterprise Repository</name>
<url>maven.repository.redhat.com/techpreview/all/</url>;
<layout>default</layout>
<releases>
<enabled>true</enabled>
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
<updatePolicy>never</updatePolicy>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>eap6techpreview</id>
<name>JBoss Maven Enterprise Repository</name>
<url>maven.repository.redhat.com/techpreview/all/</url>;
<layout>default</layout>
<releases>
<enabled>true</enabled>
<updatePolicy>never</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
<updatePolicy>never</updatePolicy>
</snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>eap6techpreview</activeProfile>
</activeProfiles>
</settings>