[CI] Tests aren't being mocked correctly on CI reruns

Sometimes, the source tests will fail due to 'az login' even though the recordings are correct.
This could possibly be due to the change in folder structure for recordings in Azure/azure-cli.
See also https://github.com/Azure/azure-cli/blob/dev/src/azure-cli-testsdk/azure/cli/testsdk/patches.py#L38 