Provide a Log4j appender for resource logging

LoggerProxy provides logging capability.  However, some libraries especially [AWS SDK uses Log4j](https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/java-dg-logging.html) for their logging.

To enable log4j for resource handler, a Log4j appender should be provided so it can be hooked with Log4j and upload logs to resource provider's CW logs. 



