Log4j2 configuration not found when running standalone application built by shade plugin

ok I found this issue about this problem.

In short, the problem arises when application classes are packaged in uber jar using maven shade plugin.
While for log4j2 version 2.8.1 the fix is still pending, the suggested workaround is to update maven pom.xml with extra configuration settings for shade plugin as follow:

    <project xmlns="http://maven.apache.org/POM/4.0.0"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

        . . . . .

        <build>
            . . . . . 
            <plugins>
                . . . . . 
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-shade-plugin</artifactId>
                    <version>2.4.1</version>
                    <configuration>
                        <filters>
                            <filter>
                                <artifact>*:*</artifact>
                                <excludes>
                                    <exclude>META-INF/*.SF</exclude>
                                    <exclude>META-INF/*.DSA</exclude>
                                    <exclude>META-INF/*.RSA</exclude>
                                </excludes>
                            </filter>
                        </filters>
                        <transformers>
                            <transformer
                                    implementation="com.github.edwgiz.mavenShadePlugin.log4j2CacheTransformer.PluginsCacheFileTransformer"/>
                        </transformers>
                    </configuration>
                    <executions>
                        <execution>
                            <phase>package</phase>
                            <goals>
                                <goal>shade</goal>
                            </goals>
                        </execution>
                    </executions>
                    <dependencies>
                        <dependency>
                            <groupId>com.github.edwgiz</groupId>
                            <artifactId>maven-shade-plugin.log4j2-cachefile-transformer</artifactId>
                            <version>2.1</version>
                        </dependency>
                    </dependencies>
                </plugin>
                . . . . . 
            </plugins>
        . . . . . 
        </build>
        . . . . . 
        <pluginRepositories>
            <pluginRepository>
                <id>oss.sonatype.org</id>
                <name>OSS Sonatype Staging</name>
                <url>https://oss.sonatype.org/content/groups/staging</url>
            </pluginRepository>
        </pluginRepositories>      
        . . . . . 
    </project>