Consider performances implication if all environments have deploy boards opened by default
Coming from https://gitlab.com/gitlab-org/gitlab-ee/issues/3328.
As per @filipa concerns, we can have ~performance implications if we have all deploy boards opened by default from the beginning, since each of them requires pinging a different endpoint.
We should collect data about:
- how many environments are normally used by projects that have at least one
- how pinging different endpoints impacts on the frontend
- how pinging different endpoints impacts on the backend
In case it is a ~performance issue, we should reconsider having a different approach.