Template log4j.properties for ES v7

[fabiogermann]

Introduce changes for the logging property file to be compatible with ES v7

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[elasticcla]

Hi @fabiogermann, we have found your signature in our records, but it seems like you have signed with a different e-mail than the one used in your Git commit. Can you please add both of these e-mails into your Github profile (they can be hidden), so we can match your e-mails to your Github profile?

[jmlrt]

jenkins test this please

[jmlrt]

jenkins test this please

[jmlrt]

Hi @fabiogermann,
Thank you for your PR ❤️

While updating log4j template for Elasticsearch 7.X is really useful, I wonder if we still need to maintain a specific log4j template into this Ansible role.

After a quick review of the template I don't see any dynamic values inside except conditionals related to Elasticsearch version.

Maybe we should instead keep the log4j2.properties file already provided by Elasticsearch packages which is always up to date. WDYT?

[jmlrt]

related to #577

[botelastic]

This PR has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
To track this PR (even if closed), please open a corresponding issue if one does not already exist.

[jmlrt]

I'm closing this PR as we handled it with #637