Fix Azure SQL Server major version parsing

[jimmystridh]

Summary

• Fix parse_sqlserver_major_version to handle Azure SQL version strings (e.g. Microsoft SQL Azure (RTM) - 12.0.2000.8)
• The previous regex only matched 4-segment versions (x.x.x.x), causing Azure SQL versions to return None
• Add priority-ordered pattern matching to support both on-prem and Azure formats

Test plan

• Added unit test for Azure SQL version string
• Existing on-prem version tests still pass

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.36%. Comparing base (f2a5a33) to head (32a943c).
⚠️ Report is 230 commits behind head on master.

Additional details and impacted files

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[AAraKKe]

Good from the agent-integrations point of view. Will ping DBM to take a look at it themselves.

[sethsamuel]

Thanks for the contribution! Could you please add some examples/unit tests for each of the new regexes?

[AAraKKe]

Just noticed the validations were failing, for some reason this didn't fully load before. The Validations errors are expected until you merge from master the latest changes. There was an update for licenses there.

Review from AAraKKe is dismissed. Related teams and files:

• agent-integrations
  • sqlserver/changelog.d/22573.fixed
  • sqlserver/datadog_checks/sqlserver/utils.py
  • sqlserver/tests/test_unit.py

[AAraKKe]

Hi @sethsamuel just requested your review to merge, let me know if you think it is good to go.

[sethsamuel]

Please add examples and tests for each of the regex patterns