Add package 'google-auth-httplib2' into the RHAI pipeline onboarding collection.

The package requires builder repository onboarding before it can be added to the RHAI pipeline. This ticket is blocked by the builder onboarding ticket.

Summary

Here is the executive summary formatted as a JIRA comment in JIRA wiki markup:

Executive Summary: google-auth-httplib2 Packaging Analysis

google-auth-httplib2 (v0.3.0) is a pure-Python, single-module package with a complexity score of 0/10 — making it one of the simplest packages to onboard. It provides an httplib2 transport adapter for Google Authentication and is a transitive dependency of google-api-python-client, which is the business justification for AIPCC-10796. The package requires no native compilation, has no system library dependencies, and produces a py3-none-any wheel that is architecture-independent. A single noarch build will cover all three target indexes (CPU, CUDA, ROCm). The source is licensed under Apache-2.0, fully compatible with Red Hat distribution policies, and the entire dependency chain uses permissive licenses.

The build system is straightforward setuptools with a declarative setup.py and no custom build logic. The only runtime dependencies are google-auth (>=1.32.0, <3.0.0) and httplib2 (>=0.19.0, <1.0.0). Building from source is trivial:

pip download google-auth-httplib2==0.3.0 --no-binary :all: --no-deps
pip wheel google_auth_httplib2-0.3.0.tar.gz --no-deps

Note: The transitive dependency chain includes cryptography (via google-auth), which does require native compilation (C/Rust) and should be handled separately in the build pipeline if building the full tree from source.

There are no critical blockers or known packaging issues. The original repository (googleapis/google-auth-library-python-httplib2) has been archived and its source deleted; the canonical source now lives in the googleapis/google-cloud-python monorepo under packages/google-auth-httplib2/. While the package carries a deprecation badge, Google continues active maintenance — the latest release (v0.3.0) shipped 2025-12-15 with Python 3.14 support, and the source was migrated to the active monorepo in February 2026. The deprecation is advisory only; the package remains a hard dependency of google-api-python-client.

Recommendation: Proceed immediately with onboarding version 0.3.0. No special environment configuration, build customizations, or workarounds are required. The 2026-03-15 target date has no risk factors. Default probe tests are sufficient for validation, with the package's own pytest suite available for additional coverage if desired.