[experiments][tests] Moved tests.py to tests/tests_api.py

These tests were only API related and it makes the application
more coherent with others having similar tests.
1 job for 527_implement_experiment_reset_api in 21 minutes and 8 seconds (queued for 1 second)
Status Job ID Name Coverage
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passed #172790
docker-build
build_linux_36

00:21:08

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