Replace Symphonia Lambda-Logging with Lambda Powertools

[ccolon11]

Issue #496

Description of changes:
Replace Symphonia Lambda-Logging with Lambda Powertools

By submitting this pull request

• [X ] I confirm that my contribution is made under the terms of the Apache 2.0 license.
• [X ] I confirm that I've made a best effort attempt to update all relevant documentation.

[deki]

Thanks for your contribution. Have you compared the log output?
log4j2.xml probably needs to be changed so the Lambda request ID is still part of it.

I also see the dependency listed here https://github.com/awslabs/aws-serverless-java-container/blob/c9c573f71c38843012e1cc9c353810c65d0573a0/aws-serverless-springboot2-archetype/src/main/resources/archetype-resources/build.gradle#L13 and here https://github.com/awslabs/aws-serverless-java-container/blob/c9c573f71c38843012e1cc9c353810c65d0573a0/aws-serverless-jersey-archetype/src/main/resources/archetype-resources/build.gradle#L12.
Let's remove it there and just keep it as part of the samples.