feature: Stop using port 80 for Grafana service

[patrickdung]

Chart name and version, where you feel a lack of requested feature
chart: victoria-metrics-cluster
version: v0.33.2

Is your feature request related to a problem? Please describe.
The pod is using port 80.
Maybe change it to a port number greater than 1023?

Describe the solution you'd like
A clear and concise description of what you want to happen.

NAME                                           TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                      AGE
vm-grafana                                     ClusterIP   10.43.8.240     <none>        80/TCP                       81m

Describe alternatives you've considered
I think it's a standard practice that port running as non-root should use port number > 1023.

[AndrewChubatiuk]

hey @patrickdung
we're using grafana as a subchart, which has port 80 set by default for service. Feel free to override it using .Values.grafana.service.port