Allow istio sidecar injection to trial pods

[robbertvdg]

/kind feature

Describe the solution you'd like
At the moment the trial pods are hardcoded with the "sidecar.istio.io/inject=false" annotation. For security reasons we would like to enable istio for our experiments. I would suggest an optional parameter trial_istio_enabled with default false so the current flow is not interrupted.

Anything else you would like to add:
I already implemented this in our cluster. Are you willing to accept a PR for this feature?

[andreyvelich]

Hi @robbertvdg.

For v1beta1 it is already possible.
We don't attach sidecar.istio.io/inject=false annotation to Trial's Jobs by default.
Users need to do it manually, if they want it (kubeflow/website#2320).

We will release Katib 0.10 soon.

[robbertvdg]

Ah I am currently using v1alpha3. I will check out v1beta1 and try to make it work!