azurerm_virtual_network_gateway_resource - Allow multiple vpn auth types

[catriona-m]

fixes #11413

[katbyte]

Looks like we have some test failures:

------ Stdout: -------
=== RUN   TestAccVirtualNetworkGateway_vpnClientConfigAzureAdAuth
=== PAUSE TestAccVirtualNetworkGateway_vpnClientConfigAzureAdAuth
=== CONT  TestAccVirtualNetworkGateway_vpnClientConfigAzureAdAuth
    testcase.go:88: Step 1/2 error: After applying this test step, the plan was not empty.
        stdout:
        
        
        Terraform used the selected providers to generate the following execution
        plan. Resource actions are indicated with the following symbols:
          ~ update in-place
        
        Terraform will perform the following actions:
        
          # azurerm_virtual_network_gateway.test will be updated in-place
          ~ resource "azurerm_virtual_network_gateway" "test" {
                id                         = "/subscriptions/*******/resourceGroups/acctestRG-210903183213257255/providers/Microsoft.Network/virtualNetworkGateways/acctestvng-210903183213257255"
                name                       = "acctestvng-210903183213257255"
                # (9 unchanged attributes hidden)
        
        
        
              ~ vpn_client_configuration {
                  ~ vpn_auth_types       = [
                      - "AAD",
                    ]
                    # (5 unchanged attributes hidden)
                }
                # (2 unchanged blocks hidden)
            }
        
        Plan: 0 to add, 1 to change, 0 to destroy.
--- FAIL: TestAccVirtualNetworkGateway_vpnClientConfigAzureAdAuth (1767.34s)
FAIL

[katbyte]

Thanks @catriona-m - LGTM 🚀

[github-actions]

This functionality has been released in v2.76.0 of the Terraform Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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