feat: Make kube-apiserver endpoint configurable

[sanderterschure]

Pull Request

What? (description)

In the current helm chart there is no option to configure the Kubernetes API endpoint when deploying the CCM as a daemonset. This PR adds the option to make the kube-apiserver endpoint configurable.

...
daemonSet:
  enabled: true
  k8s:
    serviceHost: 10.0.0.1
    servicePort: 443
...

Why? (reasoning)

In my setup we are running the kube-apiserver on a different port because of firewall limitations. Since this is not configurable the deployed will fail with the following logs:

0930 13:21:31.971223       1 serving.go:386] Generated self-signed cert in-memory
I0930 13:21:32.407675       1 serving.go:386] Generated self-signed cert in-memory
W0930 13:21:32.407727       1 client_config.go:659] Neither --kubeconfig nor --master was specified.  Using the inClusterConfig.  This might not work.
unable to load configmap based request-header-client-ca-file: Get "https://10.60.0.11:6443/api/v1/namespaces/kube-system/configmaps/extension-apiserver-authentication": dial tcp 10.60.0.11:6443: connect: connection refused
E0930 13:21:32.776521       1 run.go:72] "command failed" err="unable to load configmap based request-header-client-ca-file: Get \"[https://10.60.0.11:6443/api/v1/namespaces/kube-system/configmaps/extension-apiserver-authentication\](https://10.60.0.11:6443/api/v1/namespaces/kube-system/configmaps/extension-apiserver-authentication/)": dial tcp 10.60.0.11:6443: connect: connection refused"

Acceptance

Please use the following checklist:

• you linked an issue (if applicable)
• you included tests (if applicable)
• you ran conformance (make conformance)
• you linted your code (make lint)
• you linted your code (make unit)

See make help for a description of the available targets.

[sergelogvinov]

Hi, sorry for delay.

Can you:

• use low case on commit message
• add commit body
• DSO (sign-off) commit (git commit -s)
• and make one commit (squash commits) in one

And we can merge it! 👍

[sergelogvinov]

/m

[sergelogvinov]

/m