feat(nginx): add an option to set static ip for clusterIP service

[Adibov]

I needed to create a clusterIP service for nginx which has static IP and there was no option to do so, therefore I created this MR to solve this issue.

[zyyw]

Thanks for contributing to harbor-helm! Please undo the change in this file:

• Chart.yaml

BTW, also I see there is a large diff on README.md. It seems that you format it a little bit with only one new entry for expose.clusterIP.clusterIP, right?

[zyyw]

Why your env is static IP specifically?

[Adibov]

Thanks for contributing to harbor-helm! Please undo the change in this file:

• Chart.yaml

BTW, also I see there is a large diff on README.md. It seems that you format it a little bit with only one new entry for expose.clusterIP.clusterIP, right?

I roll-backed changes on Chart.yaml file. Also, you're right about the changes on README.md file. I only add documentation about expose.clusterIP.clusterIP field.

[Adibov]

Why your env is static IP specifically?

Actually, we run self-hosted GitLab runners in a Kubernetes cluster in which we mounted the docker socket of all jobs' executors to their corresponding nodes. Therefore, we needed to access the harbor nginx service from nodes, and to achieve this functionality, we had to create a static IP service for harbor and a host alias in all nodes. (didn't want to expose the harbor by ingress or node port)

[zyyw]

line 17. it should also be .Values.expose.clusterIP.staticClusterIP I suppose.

[Adibov]

You're totally right, Fixed.

[zyyw]

@Adibov , please rebase main branch code and resolve the conflicts in README.md file.
Thank you!

[Adibov]

@Adibov , please rebase main branch code and resolve the conflicts in README.md file. Thank you!

Rebased to the main branch and resolved conflicts. Any more comment would be welcomed :)

[wy65701436]

lgtm