chore(llmobs): flaky crew ai test

[lievan]

From this ci failure, i see some unmatched requests during cassette tests for crew ai
https://gitlab.ddbuild.io/DataDog/apm-reliability/dd-trace-py/-/jobs/1018541008

The requests are to testagent and telemetry.crewai.com

this PR tries to fix it by adding those hosts to ignore_hosts

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

tests/contrib/crewai/conftest.py                                        @DataDog/ml-observability

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 280 ± 3 ms.

The average import time from base is: 284 ± 3 ms.

The import time difference between this PR and base is: -3.2 ± 0.1 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.072 ms (0.74%)

ddtrace.bootstrap.sitecustomize 1.394 ms (0.50%)

ddtrace.bootstrap.preload 1.394 ms (0.50%)

ddtrace.internal.remoteconfig.client 0.687 ms (0.24%)

ddtrace 0.678 ms (0.24%)

ddtrace.internal._unpatched 0.032 ms (0.01%)

json 0.032 ms (0.01%)

json.decoder 0.032 ms (0.01%)

re 0.032 ms (0.01%)

enum 0.032 ms (0.01%)

types 0.032 ms (0.01%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-07-09 15:29:52

Comparing candidate commit 42b4ac8 in PR branch evan.li/fix-crew-flake with baseline commit 573a530 in branch main.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 515 metrics, 2 unstable metrics.

scenario:iastaspects-replace_aspect

• 🟥 execution_time [+694.474ns; +768.046ns] or [+14.642%; +16.193%]