Regressions were introduced when fixing
https://github.com/hashicorp/terraform/pull/8607 . Specifically when
resources in the statefile are deleted or missing in real life, then
terraform plan would exit with an error when it recieved a 404 not
found. The correct behaviour would be to show a plan with the offer to
create the missing resources.
apply
The IP COnfiguration block of `azurerm_network_interface` didn't have a
hash created in a way that changes to the optional params were being
picked up:
```
~ azurerm_network_interface.test
ip_configuration.273485505.name: "testconfiguration1" => ""
ip_configuration.273485505.private_ip_address_allocation: "dynamic" => ""
ip_configuration.273485505.subnet_id: "/subscriptions/34ca515c-4629-458e-bf7c-738d77e0d0ea/resourceGroups/acctestrg/providers/Microsoft.Network/virtualNetworks/acctvn/subnets/acctsub" => ""
ip_configuration.~273485505.load_balancer_backend_address_pools_ids.#: "" => "<computed>"
ip_configuration.~273485505.load_balancer_inbound_nat_rules_ids.#: "" => "<computed>"
ip_configuration.~273485505.name: "" => "testconfiguration1"
ip_configuration.~273485505.private_ip_address: "" => "<computed>"
ip_configuration.~273485505.private_ip_address_allocation: "" => "dynamic"
ip_configuration.~273485505.public_ip_address_id: "" => "${azurerm_public_ip.test.id}"
ip_configuration.~273485505.subnet_id: "" => "/subscriptions/34ca515c-4629-458e-bf7c-738d77e0d0ea/resourceGroups/acctestrg/providers/Microsoft.Network/virtualNetworks/acctvn/subnets/acctsub"
```
This caused the following error:
```
Error applying plan:
1 error(s) occurred:
* azurerm_network_interface.test: diffs didn't match during apply. This is a bug with Terraform and should be reported as a GitHub Issue.
Please include the following information in your report:
```
Notice that the hash didn't change. This change adds the remaining optional params to the hash so that the hash id will change.
```
~ azurerm_network_interface.test
ip_configuration.4255411321.load_balancer_backend_address_pools_ids.#: "" => "<computed>"
ip_configuration.4255411321.load_balancer_inbound_nat_rules_ids.#: "" => "<computed>"
ip_configuration.4255411321.name: "" => "testconfiguration1"
ip_configuration.4255411321.private_ip_address: "" => "<computed>"
ip_configuration.4255411321.private_ip_address_allocation: "" => "dynamic"
ip_configuration.4255411321.public_ip_address_id: "" => "/subscriptions/34ca515c-4629-458e-bf7c-738d77e0d0ea/resourceGroups/acctestrg/providers/Microsoft.Network/publicIPAddresses/public-ip"
ip_configuration.4255411321.subnet_id: "" => "/subscriptions/34ca515c-4629-458e-bf7c-738d77e0d0ea/resourceGroups/acctestrg/providers/Microsoft.Network/virtualNetworks/acctvn/subnets/acctsub"
ip_configuration.966273186.name: "testconfiguration1" => ""
ip_configuration.966273186.private_ip_address_allocation: "dynamic" => ""
ip_configuration.966273186.subnet_id: "/subscriptions/34ca515c-4629-458e-bf7c-738d77e0d0ea/resourceGroups/acctestrg/providers/Microsoft.Network/virtualNetworks/acctvn/subnets/acctsub" => ""
```
This allows the Update to work as expected :)
```
azurerm_network_interface.test: Modifications complete
Apply complete! Resources: 0 added, 1 changed, 0 destroyed.
```
* Adding private ip address reference
* adding private ip address reference
* Updating the docs.
* Removing optional attrib from private_ip_address
Removing optional attribute from private_ip_address, this element is only being used in the read.
* Selecting the first element instead of using a loop for now.
Change this to a loop when https://github.com/Azure/azure-sdk-for-go/issues/259 is fixed