Extend feature environments with frontend

[itegulov]

Having backend deployed is great and all, but its usefulness is dubios without also having an accompanying frontend. Shouldn't be too hard in principle, but unclear what branch we should be deploying by default and whether it should be customizable.

[volovyks]

Ideally, if we will have a comand that will triger test env, it can be a branch mentioned in this command.
But only if it's not too hard.

[itegulov]

Blocked until frontend implements the new version of API

CC @hcho112 ping us when you guys think its ready to be deployed

[DavidM-D]

Is this ready now?

[volovyks]

Looks like we will change our design to have only one test environment. It will be updated on request from any PR.
I do not think that we need to spin FE with it, do not forget that we will have staging env.
cc @itegulov what do you think? Should we close this issue?

[itegulov]

Since we are moving to a static feature enviornment I agree that we can close this