Support implicit dependency based on top level resource_group_name attribute

[magodo]

The dependency injection logic now also add supports for replacing the top level resource_group_name's value by a reference to the resource's name attribute if that resource's name has the same value, and that resource is a resource group.

This is almost only relevant to azurerm provider as azapi provider has no such top level attribute.

Note that we support for resource_group_name based on the fact that this is a well known attribute in azurerm to represent the residing resource group's name of the current resource. That's also the reason why we only support it at the top level, since there can be resources who has nested block, that also expose a resource_group_name and a subscription_id (e.g. azurerm_data_share_dataset_blob_storage), in which case the actual resource group can be different than the resource group in the current exported resource list (i.e. they have the same name, but from the different subscriptions).

Example

Before

resource "azurerm_resource_group" "res-0" {
  location = "westus2"
  name     = "magodo-test-vnet"
}
resource "azurerm_virtual_network" "res-1" {
  address_space       = ["10.0.0.0/16"]
  location            = "westus2"
  name                = "magodo-test"
  resource_group_name = "magodo-test-vnet"
  depends_on = [
    azurerm_resource_group.res-0
  ]
}

Now

resource "azurerm_resource_group" "res-0" {
  location = "westus2"
  name     = "magodo-test-vnet"
}
resource "azurerm_virtual_network" "res-1" {
  address_space       = ["10.0.0.0/16"]
  location            = "westus2"
  name                = "magodo-test"
  resource_group_name = azurerm_resource_group.res-0.name
}

Fix #131

[gerrytan]

Nice work! I left some minor comments. Otherwise this PR is good to go in.

[gerrytan]

Nice work! I left some minor comments. Otherwise this PR is good to go in.

[magodo]

Thanks @gerrytan! I've resolved all the comments, pls take another look!