feat: deploy private dns zone and private dns zone virtual network link for managed prometheus

[tobiasehlert]

Overview/Summary

This pull request includes changes to add Private DNS zone and Private DNS zone Virtual Network Link for Azure Managed Prometheus by the connectivity-module. The most important changes include updates to the README.md, modules/connectivity/README.md, modules/connectivity/locals.tf, modules/connectivity/variables.tf, and variables.tf files.

Add support for Private DNS zone and Private DNS zone Virtual Network Link for Managed Prometheus:

• README.md: Added azure_managed_prometheus as an optional boolean setting.
• modules/connectivity/README.md: Included azure_managed_prometheus in the list of optional boolean settings.
• modules/connectivity/locals.tf: Defined azure_managed_prometheus with private link locations.
• modules/connectivity/variables.tf: Added azure_managed_prometheus to the settings variable.
• variables.tf: Included azure_managed_prometheus in the configure_connectivity_resources variable.

This PR fixes/adds/changes/removes

N/A

Breaking Changes

N/A

Testing Evidence

Please provide any testing evidence to show that your Pull Request works/fixes as described and planned (include screenshots, if appropriate).

Terraform will perform the following actions:

  # module.enterprise_scale.azurerm_private_dns_zone.connectivity["/subscriptions/<subscription-id>/resourceGroups/myalz-connectivity-swedencentral/providers/Microsoft.Network/privateDnsZones/privatelink.swedencentral.prometheus.monitor.azure.com"] will be created
  + resource "azurerm_private_dns_zone" "connectivity" {
      + id                                                    = (known after apply)
      + max_number_of_record_sets                             = (known after apply)
      + max_number_of_virtual_network_links                   = (known after apply)
      + max_number_of_virtual_network_links_with_registration = (known after apply)
      + name                                                  = "privatelink.swedencentral.prometheus.monitor.azure.com"
      + number_of_record_sets                                 = (known after apply)
      + resource_group_name                                   = "myalz-connectivity-swedencentral"
      + tags                                                  = {
          + "deployedBy" = "terraform/azure/caf-enterprise-scale"
        }

      + soa_record (known after apply)

      + timeouts {}
    }

  # module.enterprise_scale.azurerm_private_dns_zone_virtual_network_link.connectivity["/subscriptions/<subscription-id>/resourceGroups/myalz-connectivity-swedencentral/providers/Microsoft.Network/privateDnsZones/privatelink.swedencentral.prometheus.monitor.azure.com/virtualNetworkLinks/<subscription-id>-<random-id>"] will be created
  + resource "azurerm_private_dns_zone_virtual_network_link" "connectivity" {
      + id                    = (known after apply)
      + name                  = "<subscription-id>-<random-id>"
      + private_dns_zone_name = "privatelink.swedencentral.prometheus.monitor.azure.com"
      + registration_enabled  = false
      + resource_group_name   = "myalz-connectivity-swedencentral"
      + tags                  = {
          + "deployedBy" = "terraform/azure/caf-enterprise-scale"
        }
      + virtual_network_id    = "/subscriptions/<subscription-id>/resourceGroups/myalz-connectivity-swedencentral/providers/Microsoft.Network/virtualNetworks/myalz-hub-swedencentral"

      + timeouts {}
    }

Plan: 2 to add, 0 to change, 0 to destroy.

As part of this Pull Request I have

• Checked for duplicate Pull Requests
• Associated it with relevant issues, for tracking and closure.
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Updated relevant and associated documentation.

[tobiasehlert]

@matt-FFFFFF, looks good so we can get it merged? :)