Description

This improves the Medium deployment process to fix some errors that were introduced (but not found) during the 7.9.2 upgrade. The Small deployment was also updated to fix one of these problems.

Instead of setting JVM options for Elasticsearch in the jvm.options file or by using environment variables, a new file is placed in jvm.options.d. This will ensure we can reuse whatever "expert settings" are configured by Elasticsearch upstream.

Logstash does not appear to support jvm.options.d (at least, it's not documented). Since we would have to manage updates on a jvm.options file for each release, this PR removes configuration of the JVM heap size.

An issue was encountered with Kibana plugin installation, so permissions have been fixed in the Ansible to run the Kibana plugin installation command as root.

The documentation for the medium/gcp deployment suggests to set the fqdn variable to the empty string ("") if you don't have a domain that you want to point to Scorestack. Setting fqdn to the empty string causes a strange error, so the default for fqdn has been set to localhost, and the documentation has been updated to explain the fqdn recommendation.

Fixes #276

Merge Checklist

• I have tested this change locally to make sure it works
• I have updated the documentation as necessary
• I have added a release note under the Unreleased section of the Changelog
• Any relevant labels have been added
• This PR is being merged into dev, unless it's a PR for a release