Override temp directory in test run step

[raych1]

Fixed the following race condition issue while creating the sub-folders under the default temp directory.

Caused by: java.lang.IllegalArgumentException: Unable to create directory: /tmp/cloudtest/applicationinsights/telemetry
	at com.azure.monitor.opentelemetry.autoconfigure@1.5.0-beta.1/com.azure.monitor.opentelemetry.autoconfigure.implementation.utils.TempDirs.getSubDir(TempDirs.java:54)
	at com.azure.monitor.opentelemetry.autoconfigure@1.5.0-beta.1/com.azure.monitor.opentelemetry.autoconfigure.implementation.utils.AzureMonitorHelper.createTelemetryItemExporter(AzureMonitorHelper.java:35)

Repro Pipeline Run

[Copilot]

Pull request overview

This PR fixes a race condition that occurs when multiple parallel test executions attempt to create subdirectories under the default system temp directory (/tmp) by overriding the Java temp directory to use the Azure Pipelines agent-specific temp directory.

• Adds -Djava.io.tmpdir=$(Agent.TempDirectory) to all Maven test execution commands
• Applies the fix to both federated auth and non-federated auth test paths
• Covers both "From Source" and standard test runs

[raych1]

The test run looks fine for the change, and the failures are known errors in previous runs.

[raych1]

The test run looks fine for the change, and the failures are known errors in previous runs.

Interesting, this issue happens again in the new test run.
https://dev.azure.com/azure-sdk/internal/_build/results?buildId=5661559&view=logs&j=a2085e1e-7099-51de-3f58-341a3a74a909&t=bb035b95-555e-59e0-9f5f-6f62a0fa0084

It appears that the root cause of the issue is in the service test code. I'll hold off this PR.