Change traefik linkerd to ingress mode

[bengtfredh]

What need to be changed

Traefik linkerd run with:

linkerd.io/inject: enabled

This should be changed to:

linkerd.io/inject: ingress

Background:

https://linkerd.io/2.12/tasks/using-ingress/#traefik-2x

To consider:

• traefik >2.10.0 have option to use k8s native LB, that should help for how linkerd function
• With this config there should not be needed to have l5d-dst-override and linkerd.io/inject: ingress
• We should test how this affects performance

[annerisbakk]

@bengtfredh Er denne oppgaven ferdig?

[bengtfredh]

@annerisbakk Not done/finish.