Deprecated field [all_fields] used

[alexwizp]

Summary

'all_fields' property was deprecated in 6.0.0. See https://www.elastic.co/guide/en/elasticsearch/reference/5.4/query-dsl-simple-query-string-query.html

Checklist

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• This was checked for cross-browser compatibility, including a check against IE11
• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
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• This was checked for breaking API changes and was labeled appropriately
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[elasticmachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request

[alexwizp]

Related issue in ES: elastic/elasticsearch#39577

[elasticmachine]

💔 Build Failed

• continuous-integration/kibana-ci/pull-request

[alexwizp]

retest

[elasticmachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request

[elasticmachine]

Pinging @elastic/kibana-platform

[mikecote]

LGTM 👍

[tylersmalley]

Let's backport this to 6.7 as well. Starting in 7.0 we moved src/server into src/legacy/server, but other than that should be straightforward.