Filebeat does not load index template properly

Description

Currently filebeat does not load index template on start. This causes that some of fields that should be present in Elasticsearch documents has wrong types, which causes problems when one wants to use them for example in dashboards.

Proposal

We need to configure Filebeat using this documentation especially overwrite option should be used, because templates may differ from one version to another.

In this issue update to the newest version will be also performed.