Is your feature request related to a problem? Please describe.
We often want to run feast apply (or other CLI operations) on different GCP projects.

Therefore it would be nice if we could point to a specific "feature_store.yaml" when we use the CLI

Describe the solution you'd like
Something easy like feast apply --conf feature_store_prod.yaml. By default --conf would be feature_store.yaml

Describe alternatives you've considered
Copying a specific yaml to feature_store.yaml when we need to perform CLI operations on different environments

Additional context
Add any other context or screenshots about the feature request here.