Add option to exclude directories from go test

[shaynafinocchiaro]

Description

PR will allow us to exclude directories from unit test check. Some repos, like goscaleio have integration testing in a directory and unit tests in the root directory. The goal is to only run UT as part of PR builds.

Issues

List the issues impacted by this PR:

Issue ID
dell/csm#1490

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

• Tested in forked repo: https://github.com/shaynafinocchiaro/test-goscaleio/actions/runs/11839540582/job/32991217055