Add client secret (oauth2) support into azure event hub integrations

[kaiyan-sheng]

Proposed commit message

Add OAuth2 client secret authentication support for Azure Event Hub integrations
This enhancement adds OAuth2 (client_secret) authentication support to all Azure integrations that use Event Hub, following the implementation in elastic/beats#47256.

Changes include:

• Added auth_type parameter to select between connection_string (default) and client_secret authentication
• Added OAuth2 parameters: eventhub_namespace, tenant_id, client_id, client_secret, authority_host
• Made connection_string and storage_account_key optional (conditionally required based on auth_type)
• Updated all affected template files to output OAuth2 parameters
• Version bumped 11 packages with changelog entries

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Author's Checklist

Affected 12 packages:

• azure
• azure_logs
• azure_openai
• azure_functions
• azure_frontdoor
• azure_app_service
• azure_ai_foundry
• microsoft_sentinel
• microsoft_defender_cloud
• m365_defender
• kubernetes
• github

How to test this PR locally

Related issues

• Closes [Azure] Add client secret (Oauth2) support #17030

Screenshots

[elastic-vault-github-plugin-prod]

🚀 Benchmarks report

Package azure 👍(7) 💚(4) 💔(1)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
auditlogs	4629.63	3289.47	-1340.16 (-28.95%)	💔

Package azure_openai 👍(1) 💚(0) 💔(1)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
logs	1540.83	1200.48	-340.35 (-22.09%)	💔

Package github 👍(3) 💚(1) 💔(2)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
audit	6802.72	4201.68	-2601.04 (-38.24%)	💔
code_scanning	5747.13	4201.68	-1545.45 (-26.89%)	💔

Package m365_defender 👍(3) 💚(1) 💔(4)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
incident	1035.2	796.62	-238.58 (-23.05%)	💔
vulnerability	13333.33	7293.95	-6039.38 (-45.3%)	💔
alert	718.39	535.91	-182.48 (-25.4%)	💔
vulnerability	13333.33	10752.69	-2580.64 (-19.35%)	💔

Package microsoft_defender_cloud 👍(1) 💚(0) 💔(1)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
assessment	1161.44	920.81	-240.63 (-20.72%)	💔

Package microsoft_sentinel 👍(2) 💚(0) 💔(1)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
event	5154.64	2808.99	-2345.65 (-45.51%)	💔

To see the full report comment with /test benchmark fullreport

[elasticmachine]

💔 Build Failed

• Buildkite Build
• Commit: 590559a

Failed CI Steps

• Check integrations kubernetes

History

• 💔 Build #37476 failed ebf1062
• 💔 Build #37475 failed 2adf61a
• 💔 Build #37472 failed 10a8cf4