add test for network.client.ip tag

[smola]

Motivation

APPSEC-62223

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[github-actions]

CODEOWNERS have been resolved as:

manifests/java.yml                                                      @DataDog/asm-java @DataDog/apm-java
manifests/nodejs.yml                                                    @DataDog/dd-trace-js
manifests/php.yml                                                       @DataDog/apm-php @DataDog/asm-php
manifests/python.yml                                                    @DataDog/apm-python @DataDog/asm-python
manifests/ruby.yml                                                      @DataDog/ruby-guild @DataDog/asm-ruby
tests/test_standard_tags.py                                             @DataDog/system-tests-core

[datadog-official]

✅ Tests

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Gate network client IP tests by supported tracer versions

Adding this class enables it by default in DEFAULT and GO_PROXIES_DEFAULT for any library/version that lacks an explicit manifest rule, because unspecified tests are treated as enabled (see docs/edit/manifest.md). That creates a regression for older tracer versions that still do not emit http.client_ip/network.client.ip (the existing Test_StandardTagsClientIp is version-gated per language, e.g. in manifests/nodejs.yml and manifests/java.yml), so test_network_client_ip_with_attack can start failing in release-version runs. Please add class/method manifest gating for this new class with the same support floor as client-ip tagging.

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[Julio-Guerra]

also add http_client_ip == self.PUBLIC_IP
the rest looks good to me

[smola]

I was intentionally not doing it since it's covered by the http.client_ip tests, but it doesn't hurt. I'll do it.

[nccatoni]

LGTM for @DataDog/system-tests-core but you should get an approval from someone familiar with the feature