combine.self="override" overrides the whole plugin definition instead of appending

pom.xml

<profile>
            <id>appConfigTest</id>
            <build>
                <plugins>
                    <plugin>
                        <artifactId>maven-surefire-plugin</artifactId>
                        <configuration combine.self="override">
                            <groups>appConfigTest</groups>
                        </configuration>
                    </plugin>
                </plugins>
            </build>
        </profile>