I've been trying to reference an 
Maven pulls all! (In module-test-parents no dependencies defined.)
To achieve the same (and even more) in maven we'd also have to:
<dependencies>
<dependency>
<groupId>org.apache.kafka</groupId>
<artifactId>kafka_2.13</artifactId>
<version>3.0.0</version>
<classifier>test</classifier>
<exclusions>
<exclusion> <!--sledge hammer -->
<groupId>*</groupId>
<artifactId>*</artifactId>
</exclusion>
<!-- or selectively ... -->
</exclusions>
</dependency>
</dependencies>
In gradle the according would be (tested):
implementation ('org.apache.kafka:kafka_2.13:3.0.0:test'){
exclude group: '*'
}
