fix(django): recreate response stream to prevent reading from empty response body [backport 2.10]

[wconti27]

Fixes customer escalation. Customer was using the Spyne library with Django and making SOAP requests towards it. The problem was found to be that Django integration was reading the response body to set some span tags. However, later in the callstack, Spyne also tries to read the response body (now empty since the stream was fully read). This PR copies/recreates the response body to prevent this error.

(cherry picked from commit 20b8c2b)

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

[datadog-dd-trace-py-rkomorn]

Datadog Report

Branch report: backport-10137-to-2.10
Commit report: bc492bd
Test service: dd-trace-py

✅ 0 Failed, 175966 Passed, 1571 Skipped, 12h 49m 49.17s Total duration (44m 44.8s time saved)
⌛ 17 Performance Regressions

⌛ Performance Regressions vs Default Branch (17)

This report shows up to 5 performance regressions.

• test_distributed_tracing_disabled_via_env_var - test_distributed_tracing.py 4.05s (+3.36s, +494%) - Details
• test_pymysql_dbm_propagation_enabled - test_pymysql.py 3.6s (+2.97s, +475%) - Details
• test_import_patch_unpatch_patch - test_pymysql_patch.py 4.37s (+3.85s, +738%)
• test_operation_name_v0 - test_client.py 2.83s (+2.26s, +402%) - Details
• test_user_specified_service_v0 - test_client.py 2.94s (+2.38s, +421%) - Details

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-08-13 20:24:10

Comparing candidate commit a3d1d67 in PR branch backport-10137-to-2.10 with baseline commit 63a5a04 in branch 2.10.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 221 metrics, 9 unstable metrics.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 12.24490% with 86 lines in your changes missing coverage. Please review.

Project coverage is 10.18%. Comparing base (63a5a04) to head (bc492bd).

Files	Patch %	Lines
tests/contrib/django/soap/models.py	0.00%	28 Missing ⚠️
tests/contrib/django/test_django_wsgi.py	0.00%	26 Missing ⚠️
tests/contrib/django/soap/services.py	0.00%	20 Missing ⚠️
tests/contrib/django/utils.py	0.00%	8 Missing ⚠️
tests/contrib/django/soap/apps.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             2.10   #10208      +/-   ##
==========================================
- Coverage   11.95%   10.18%   -1.78%     
==========================================
  Files        1309     1313       +4     
  Lines      124979   125071      +92     
==========================================
- Hits        14943    12736    -2207     
- Misses     110036   112335    +2299     

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