Add private endpoint URLs to environment() response

[alex-frankel]

Context from #9708:

• When leveraging the environment function, 'privatelink${environment().suffixes.keyvaultDns}', to deploy a Private DNS Zone for the Azure Key Vault Private Endpoint, the following suffix is retrieved: "keyvaultDns": ".vault.azure.net". That is verified at this link - https://learn.microsoft.com/en-us/azure/azure-resource-manager/bicep/bicep-functions-deployment#example-1.
• The proper Private DNS Zone for Key Vault Private Endpoints is actually privatelink.vaultcore.azure.net. If 'privatelink${environment().suffixes.keyvaultDns}' is defined in the template, the zone privatelink.vault.azure.net is created instead.

Presumably there are other private DNS equivalents for other resource providers, so we should do all of them at once.

[rebel24]

Just spent a day on this due to this issue? Will this be resolved in the future so other people won't get this issue. With this issue the A records do not generate from the dnsgroup if you are using the wrong URL

[aavdberg]

I have the same problem and spend a lot of time on it before I figured it out that the suffix is wrong.

@alex-frankel when this will be fixed?

[bgawale]

Any update on this please? Still facing the same issue with key vault name suffix.