Don't include full ES index template in errors

[andrewkroh]

What does this PR do?

Index templates in some beats can be very large (~1MB) and including the data in errors can use a lot of memory and also makes for very large log lines. If the error is recurring then this makes the effects worse. So this change removes the index template body from the error. Users that need to see the index template for debugging can use <beatname> export template --es.version=1.2.3.

Fixes #25540

Why is it important?

~1MB log lines are difficult to work with.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Related issues

• Fixes libbeat 7.12.1 default logging logs excessive amount of data when failing to create index template #25540

[elasticmachine]

Pinging @elastic/agent (Team:Agent)

[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[elasticmachine]

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Build stats

• Build Cause: andrewkroh commented: run tests

• Start Time: 2021-06-14T18:07:52.435+0000

• Duration: 64 min 18 sec

• Commit: b1865f9

Test stats 🧪

Test	Results
Failed	0
Passed	243
Skipped	24
Total	267

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Test stats 🧪

Test	Results
Failed	0
Passed	243
Skipped	24
Total	267

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b bugfix/libbeat/omit-index-template-from-err upstream/bugfix/libbeat/omit-index-template-from-err
git merge upstream/master
git push upstream bugfix/libbeat/omit-index-template-from-err

[ph]

lgtm, nice addition

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b bugfix/libbeat/omit-index-template-from-err upstream/bugfix/libbeat/omit-index-template-from-err
git merge upstream/master
git push upstream bugfix/libbeat/omit-index-template-from-err

[andrewkroh]

The build was green, but uploading failed.

[2021-06-14T15:42:14.912Z] + gsutil -m -q cp -a public-read XX gs://beats-ci-temp/ci/cache/
[2021-06-14T15:42:16.354Z] ServiceException: 401 Anonymous caller does not have storage.objects.create access to the Google Cloud Storage object.
[2021-06-14T15:42:16.354Z] CommandException: 1 file/object could not be transferred.
script returned exit code 1

[andrewkroh]

run tests