[8.x](backport #41698) metricbeat: add integration TestIndexTotalFieldsLimitNotReached #41759
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Proposed commit message
This new test will start failing when the metricbeat mapping has increased to the point it isn't possible to add a new event with 500 dynamically mapped fields. It should act as a safe guard to prevent us from releasing a version where the static mapping is too close to the total fields limit.
Checklist
[ ] I have commented my code, particularly in hard-to-understand areas[ ] I have made corresponding changes to the documentation[ ] I have made corresponding change to the default configuration files[ ] I have added an entry inCHANGELOG.next.asciidoc
orCHANGELOG-developer.next.asciidoc
.Disruptive User Impact
How to test this PR locally
x-pack/metricbeat
cd x-pack/metricbeat
go build .
metricbeat.yml
to point to your stack and make sure to includesetup.kibana.host
./metricbeat setup
index.mapping.total_fields.limit
for the metricbeat index template:your-kibna/app/management/data/index_management/templates/metricbeat-9.0.0
metricbeat-9.0.0
> Manage > Edit > 3 Index settingsindex.mapping.total_fields.limit
to 10000:Related issues
This is an automatic backport of pull request #41698 done by [Mergify](https://mergify.com).