install test-jar in repository for test dependencies

histream-core/pom.xml

@@ -26,6 +26,13 @@
 						</manifest>
 					</archive>
 				</configuration>
+				<executions>
+					<execution>
+						<goals>
+							<goal>test-jar</goal>
+						</goals>
+					</execution>
+				</executions>
 			</plugin>
 		</plugins>
 	</build>