Azure CLI Parsing auth doesn't refresh the token

[tombuildsstuff]

Migrating this over from hashicorp/terraform-provider-azurerm#502 where @jwendl opened the following issue:

---

Terraform requires az login after 30 minutes of in activity, even though az account list still works.

Terraform Version

Terraform v0.10.8

Affected Resource(s)

All

If this issue appears to affect multiple resources, it may be an issue with Terraform's core, so please mention this.

Terraform Configuration Files

resource "random_id" "server" {
  keepers = {
    azi_id = 1
  }

  byte_length = 8
}

resource "azurerm_resource_group" "test" {
    name = "resourceGroup1"
    location = "West Europe"
}

resource "azurerm_cosmosdb_account" "test" {
  name                = "${random_id.server.hex}"
  location            = "${azurerm_resource_group.test.location}"
  resource_group_name = "${azurerm_resource_group.test.name}"
  offer_type          = "Standard"
  consistency_policy {
    consistency_level = "BoundedStaleness"
  }

  failover_policy {
    location = "West Europe"
    priority = 0
  }

  failover_policy {
    location = "East US"
    priority = 1
  }

  tags {
    hello = "world"
  }
}

Debug Output

Refreshing Terraform state in-memory prior to plan...
The refreshed state will be used to calculate this plan, but will not be
persisted to local or remote state storage.

---

Error: Error running plan: 1 error(s) occurred:

• provider.azurerm: No valid (unexpired) Azure CLI Auth Tokens found. Please run az login.

Panic Output

Expected Behavior

az account list => works
terraform plan => works

Actual Behavior

az account list => works
terraform plan => gives the message above
(this happens after a bit of time from when I did az login, the command works for a while, but go to lunch and it shows above error).

Steps to Reproduce

Please list the steps required to reproduce the issue, for example:

1. terraform plan

Important Factoids

References