fix AwsDomainStoreTest test exception, aws.disableEc2Metadata true

[Bhuff1]

Description

• In some CI/CD environments a different exception is thrown for a unit test in AwsDomainStoreTest.
• The unit test should have a finally block to ensure cleanup is done regardless of failure.
• For the server_aws_common module, we should not let the unit tests access aws.disableEc2Metadata as it will cause tests to fail in unexpected and difficult to debug ways. Addresses issue raised here.

Contribution Checklist:

• The pull request does not introduce any breaking changes
• I have read the contribution guidelines.
• Create an issue and link to the pull request.

[gemini-code-assist]

Code Review

This pull request updates the Maven configuration to disable EC2 IMDS during tests to prevent real AWS calls and improves the error handling in AwsDomainStoreTest by using a finally block for property cleanup and broadening the expected exception types. I have provided feedback regarding the need for an explicit failure case when an exception is not thrown, the requirement to properly configure dummy properties for test coverage, and a correction for a log message inconsistency.