Parameterize project_id in test module for GKE fleet management tests

[coderabbitai]

In the context of PR #22, it was noted that the is hardcoded to 'test-gke-fleet-host-tf64-sb' within the module in . This limits the flexibility of the test configuration and could potentially affect the ability to test in different environments.

Suggestion:
Parameterize the to allow dynamic testing environments, enhancing the module's flexibility and usability.

Suggested change:

• project_id = 'test-gke-fleet-host-tf64-sb'

• project_id = var.project_id

This change would require adding a corresponding variable in the variables definition and ensuring it's passed correctly in test configurations.

Related PR: #22
Comment: #22 (comment)