eng, replace Maven Central with Azure Artifacts feed in automation scripts

[XiaofeiCao]

Similar to PR #48817 (PowerShell scripts), this updates the Python automation scripts under eng/automation/ to use the Azure Artifacts internal feed instead of Maven Central.

Key Changes

Feed URL Update:

• Replaced MAVEN_HOST (repo1.maven.org) with Azure Artifacts feed URL (pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk-for-java/maven/v1)

Authentication:

• Added SYSTEM_ACCESSTOKEN Bearer auth headers to HTTP requests in utils.py and generate_utils.py for CI environments
• Auth is optional — when SYSTEM_ACCESSTOKEN is unset (local dev), requests proceed without auth

Timeout:

• Added timeout=30 to all requests.get() calls that were missing timeouts

Pipeline:

• Exposed SYSTEM_ACCESSTOKEN env var in generation.yml pipeline steps

[Copilot]

Pull request overview

Updates eng/automation Python scripts and pipeline wiring to prefer the Azure Artifacts Maven feed over Maven Central, adding optional CI authentication and request timeouts to improve reliability in restricted build environments.

Changes:

• Switched MAVEN_HOST to the Azure Artifacts Maven feed URL for automation downloads.
• Added optional SYSTEM_ACCESSTOKEN bearer authentication for Maven feed HTTP requests (CI-friendly) and added missing timeout=30 on relevant requests.get() calls.
• Updated eng/automation/generation.yml steps to pass SYSTEM_ACCESSTOKEN into generation scripts.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
eng/automation/utils.py	Adds bearer auth + timeout to the Maven lookup used for GA version discovery.
eng/automation/parameters.py	Repoints Maven host constant from Maven Central to Azure Artifacts feed.
eng/automation/generation.yml	Exposes SYSTEM_ACCESSTOKEN to generation steps.
eng/automation/generate_utils.py	Adds bearer auth + timeout to jar download used for changelog/breaking-change comparison.
eng/automation/generate_data.py	Adds a timeout to HTTP reads in uri_file_read.

Comments suppressed due to low confidence (1)

eng/automation/utils.py:418

• get_latest_ga_version currently fetches .../{group}/{artifact} and parses an HTML directory listing (<a href="...">) to discover GA versions. With MAVEN_HOST now pointing at an Azure Artifacts Maven feed, that endpoint may not expose an HTML listing (or may change format), which can break GA version discovery and downstream changelog comparisons. Prefer querying .../{group}/{artifact}/maven-metadata.xml and parsing <version> elements (standard Maven repo behavior) to make this work reliably across Maven Central and Azure Artifacts (similar to how the PowerShell scripts query maven-metadata.xml).

    group_path = group_id.replace(".", "/")

    headers = {}
    token = os.environ.get("SYSTEM_ACCESSTOKEN")
    if token:
        headers["Authorization"] = f"Bearer {token}"

    response = requests.get(f"{MAVEN_HOST}/{group_path}/{module}", headers=headers, timeout=30)

    response.raise_for_status()

    ga_version_pattern = r"<a href=\"(\d+\.\d+\.\d+)\/"
    ga_versions = [v.group(1) for v in re.finditer(ga_version_pattern, response.text, re.S)]

[weidongxu-microsoft]

LGTM

but wait for EngSys

[XiaofeiCao]

This pipeline should no longer be used. Update here for consistency.