Add Webhooks for IBMPowerVSClusterTemplate

[Karthik-K-N]

/kind feature
/area provider/ibmcloud

Describe the solution you'd like
[A clear and concise description of what you want to happen.]
IBMPowerVSClusteTempalate was added as a part of PR: #967, We need to add webhooks and webhooks tests for same

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

[Sajiyah-Salat]

hello @mkumatag @Karthik-K-N can you please describe this issue in detail. I would love to work on this issue. Thank you.

[Karthik-K-N]

Hi @Sajiyah-Salat, Thank you for showing interest in contributing and it would be a very good issue to get started.

cluster-api has a concept called cluster-class using which user can create multiple clusters from a template, More details about it can be found here: https://cluster-api.sigs.k8s.io/tasks/experimental-features/cluster-class/index.html

This repository (cluster-api-provider-ibmcloud) supports provisioning of k8s cluster either in IBM Cloud Power VS infrastructure or IBM Cloud VPC infrastructure.

We have already added support for using cluster class for IBM Cloud Power VS infrastructure via PR:#967, this can be used as reference.

In this issue we wanted to add cluster class support for VPC infrastructure.

Please let me know if you have any queries or need any help to get started.

[Sajiyah-Salat]

I got the issue.
I have gone through the referenced pr.
Their 10+ files have changed.
I wonder how this is good first issue.