surefire.xml

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.12</version>
        <configuration>
          <argLine>${argLine} -Xmx512m -XX:MaxPermSize=128m</argLine>
          <includes>
            <include>**/*Test.java</include>
            <include>**/*Spec.java</include>
          </includes>
        </configuration>
      </plugin>