Kubernetes helm chart: add api configuration to the vector-aggregator

[dzirg44]

Current Vector Version

nightly-2021-01-20-debian docker image

Use-cases

for some reasons (like healthchecks or external services api requests) we can add a possibility to configure it.

Attempted Solutions

i created a simple fix
https://github.com/dzirg44/vector/blob/service-type/distribution/helm/vector-aggregator/templates/configmap.yaml
but I am not sure about implementation. Should we use vector-shared templates for it? Or just keep it simple as possible.
Or maybe create more general helper.
Also, should we create an additional service for it? Or just use internal service configuration.

[MOZGIII]

Thanks for bringing this up!
This can be at libvector.vectorConfigHeader, and it does make sense to use vector-shared for this.
Would you be interested in submitting a PR for this?

Also, should we create an additional service for it? Or just use internal service configuration.

Currently, we don't see it used with a Service at all, but rather with kubectl port-forward. This makes way more sense, as you can explicitly connect directly to the instance you're looking for.

[dzirg44]

okay, i will create a pull request !