Description
On a brand new install of 6.8. then upgrade to 7. the Kibana Upgrade Assistant (and corresponding Deprecation Info API) will show a warning for some index templates installed by default. In more realistic scenarios the templates would like be upgraded via some process and thus not displayed here. However, since the user of the system did not land these templates, they should be deleted or hidden from view.
.monitoring-beats, .monitoring-es, .monitoring-kibana, .monitoring-logstash, apm-6.8.23
The monitoring templates get a bit tricky...since they are not explicitly versioned via the name, we can't simply delete the template without possibly breaking current versions. We would need to delete only monitoring templates that have the old "doc" type (and/or is older than a specific internal version) but not delete any current template with the same name.
I am not sure what to do with the apm-6.8. template. I assume it could be deleted if the pattern/strategy is to install an index template per version.
