[Fleet] Cleanup some noisier logs

[kpollich]

Summary

Cleans up a few logging calls added in #172657 that are just a bit noisy, like logging package archive paths and full handlebars template contents.

e.g.

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[apmmachine]

🤖 GitHub comments

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Just comment with:

• /oblt-deploy : Deploy a Kibana instance using the Observability test environments.
• /oblt-deploy-serverless : Deploy a serverless Kibana instance using the Observability test environments.
• run elasticsearch-ci/docs : Re-trigger the docs validation. (use unformatted text in the comment!)

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: c2c8e4f

Failed CI Steps

• Explore - Security Solution Cypress Tests #2
• Defend Workflows Cypress Tests on Serverless #5
• Defend Workflows Cypress Tests on Serverless #6

Test Failures

• [job] [logs] Defend Workflows Cypress Tests on Serverless #5 / Response actions history page "before all" hook for "retains expanded action details on page reload" "before all" hook for "retains expanded action details on page reload"
• [job] [logs] Explore - Security Solution Cypress Tests #2 / url state sets and reads the url state for timeline by id sets and reads the url state for timeline by id
• [job] [logs] Defend Workflows Cypress Tests on Serverless #6 / When on the Endpoint List in Security Essentials PLI and Isolated hosts exist "before all" hook for "should display release options in host row actions" "before all" hook for "should display release options in host row actions"

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @kpollich