[BUG]: Unit test for csm-metrics-powerstore fails periodically

[tdawe]

Describe the bug
Unit tests for csm-metrics-powerstore fails periodically due to error:

--- FAIL: Test_Run (0.20s)
    run_test.go:264: missing call(s) to *exportermocks.MockOtlexporter.InitExporter(is anything, is anything) /root/csm-metrics-powerstore/internal/entrypoint/run_test.go:233
    run_test.go:264: aborting test due to missing call(s)
    --- FAIL: Test_Run/error_reading_certificate (0.00s)
        testing.go:1104: test executed panic(nil) or runtime.Goexit: subtest may have called FailNow on a parent test

To Reproduce
Steps to reproduce the behavior:

1. Run the unit tests with a high count (ex: --count 100)

Expected behavior
Tests should be successful

Screenshots
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Logs
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System Information (please complete the following information):

• OS/Version: [e.g. RHEL 7.6]
• Kubernetes Version [e.g. 1.18]
• Additional Information...

Additional context
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