Add virtualWorkspace & baseURL flag

[mjudeikis]

Summary

What Type of PR Is This?

Now we need to provide baseURL for shards, as it will default to pod IP address.
While VirtualWorkspaceURL is defaulted from baseURL, I added it for consistency and readability. Easier to read and reason about. Else you see the behaviour vs flags and don't understand what is happening.

These flags converts to shard object spec hence having them makes it easier to spot inconsistencies (they happen if you change flags but dont recreate shard object)_

  spec:
    baseURL: https://root-kcp.kcp-faros.svc.cluster.local:6443
    externalURL: https://frontproxy-front-proxy.kcp-faros.svc.cluster.local:6443
    virtualWorkspaceURL: https://root-kcp.kcp-faros.svc.cluster.local:6443

/kind bug

Related Issue(s)

Fixes #

Release Notes

NONE

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