fix(node-exporter): add GOMAXPROCS=1

[ralgozino]

set GOMAXPROCS=1 to avoid CPU throttling in Kubernetes.

See prometheus/node_exporter#2530

Even keeping the resource limits the error hasn't repeated in +6h adding the env var.

Fixes #106

[lnovara]

LGTM

Edit: it would be better to add a patch somewhere (even inline in kustomization.yaml) to avoid changing the upstream manifests.

[lnovara]

See my previous comment.

[nohant]

LGTM

Edit: it would be better to add a patch somewhere (even inline in kustomization.yaml) to avoid changing the upstream manifests.

why you dont want to fix the upstream but want to add it as a patch later?

[lnovara]

Because we copy the manifests from upstream and altering them means more work in the next release.

[nohant]

Because we copy the manifests from upstream and altering them means more work in the next release.

youre right

[ralgozino]

LGTM

Edit: it would be better to add a patch somewhere (even inline in kustomization.yaml) to avoid changing the upstream manifests.

I agree, in fact I thought to do it that way but then I forgot. Fixed.

Thanks!

[lnovara]