Port-forward directly to k3s

[mads-hartmann]

Description

Port forwarding to Grafana/Prometheus in preview environments is broken at the moment. We get an error when we try to visit the page. See below:

gitpod /workspace/gitpod (ak/supervisor_observability) $ ./dev/preview/portforward-monitoring-satellite.sh -c harvester

Starting port-forwarding:

Prometheus:
https://9090-gitpodio-gitpod-ijwocmzi0o3.ws-eu67.gitpod.io

Grafana:
https://3000-gitpodio-gitpod-ijwocmzi0o3.ws-eu67.gitpod.io


Forwarding from 127.0.0.1:9090 -> 32001
Forwarding from [::1]:9090 -> 32001
Forwarding from 127.0.0.1:3000 -> 32000
Forwarding from [::1]:3000 -> 32000
Handling connection for 3000
E0926 13:52:32.090059   23719 portforward.go:406] an error occurred forwarding 3000 -> 32000: error forwarding port 32000 to pod 351aac1da93beb827a09a5a69754f125480d8216fde7517febfa68f7e5e64330, uid : failed to execute portforward in network namespace "/var/run/netns/cni-07716292-fde6-283c-aad7-8f84b947f878": failed to dial 32000: dial tcp4 127.0.0.1:32000: connect: connection refused
E0926 13:52:32.090520   23719 portforward.go:234] lost connection to pod

This PR changes it so that we don't go through svc/proxy in the Harvester cluster, but instead go directly to the k3s cluster.

Related Issue(s)

No issue. Reported here.

How to test

I used this change on Antons branch and it worked.

Release Notes

NONE

Documentation

N/A

Werft options:

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-integration-tests=all
  Valid options are all, workspace, webapp, ide