Add WSO2 API Manager Analytics Worker Docker images to Official Docker Library

[chirangaalwis]

Checklist for Review

• associated with or contacted upstream?
  • Yes, this request has been made by WSO2 Inc. I am one of the maintainers of WSO2 product Docker images.
• does it fit into one of the common categories? ("service", "language stack", "base distribution")
  • Service
• is it reasonably popular, or does it solve a particular use case well?
  • WSO2 was named a Leader in The Forrester Wave™: API Management Solutions, Q4 2018 Report.
• does a documentation PR exist? (should be reviewed and merged at roughly the same time so that we don't have an empty image page on the Hub for very long)
  • Yes, please find the documentation PR from Add documentation for WSO2 API Manager Analytics Worker Docker images at Official Docker Library docs#1497.
• dockerization review for best practices and cache gotchas/improvements (ala the official review guidelines)?
  • Yes, we have referred to the best practices of implementing Dockerfiles and review guidelines.
• 2+ dockerization review?
• existing official images have been considered as a base? (ie, if foobar needs Node.js, has FROM node:... instead of grabbing node via other means been considered?)
  • Yes, we have used Ubuntu 18.04 LTS based Official Docker image with AdoptOpenJDK 8 HotSpot JVM pre-installed ( adoptopenjdk:8u212-b03-jdk-hotspot).
• if FROM scratch, tarballs only exist in a single commit within the associated history?
• passes current tests? any simple new tests that might be appropriate to add? (https://github.com/docker-library/official-images/tree/master/test)

[chirangaalwis]

Closing this PR and integrating the WSO2 API Manager Analytics Worker profile Docker images under the wso2am image repository (please see #6043 (comment)).

[chirangaalwis]

Re-opening this PR based on the comment #6043 (comment).

[chirangaalwis]

As per comment #6043 (comment), I am closing this PR.