Make benchmark JAR executable again

Author: ppkarwasz

log4j-perf-test/pom.xml

@@ -196,6 +196,21 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-shade-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>generate-uber-jar</id>
+            <configuration>
+              <transformers combine.children="append">
+                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                  <manifestEntries>
+                    <Main-Class>org.openjdk.jmh.Main</Main-Class>
+                    <Multi-Release>true</Multi-Release>
+                  </manifestEntries>
+                </transformer>
+              </transformers>
+            </configuration>
+          </execution>
+        </executions>
       </plugin>
 
     </plugins>