`AZURE_TEST_RUN_LIVE` needs to be set outside of `.env` during local testing

I'm invoking tests locally. I have a `.env` defined. I defined `AZURE_TESTS_RUN_LIVE=true` within that `.env`. I am still getting `playback cannot find recording file` when it should be attempting **record** instead of default to playback.

If I set `AZURE_TESTS_RUN_LIVE` in environment, THEN run, the tests successfully go to `record` mode. We should be able to handle it when a `.env` exists and the user sets `AZURE_TESTS_RUN_LIVE` within only the `.env`.