Enable storage backups for Azure clusters

[sgibson91]

• related to: Enable home directory backups with Azure File backups #624

[sgibson91]

Trying to apply this to utoronto gives me the following unhelpful error

azurerm_backup_policy_file_share.backup_policy: Creating...
╷
│ Error: creating/updating Backup Policy (Subscription: "xxxx"
│ Resource Group Name: "2i2c-utoronto-cluster"
│ Vault Name: "homedir-recovery-vault"
│ Backup Policy Name: "homedir-recovery-vault-policy"): protectionpolicies.ProtectionPoliciesClient#CreateOrUpdate: Failure responding to request: StatusCode=400 -- Original Error: autorest/azure: Service returned an error. Status=400 Code="UserErrorInvalidRequestParameter" Message="Parameter NO_PARAM in request is invalid. Please provide correct value for parameter NO_PARAM"
│ 
│   with azurerm_backup_policy_file_share.backup_policy,
│   on storage.tf line 51, in resource "azurerm_backup_policy_file_share" "backup_policy":
│   51: resource "azurerm_backup_policy_file_share" "backup_policy" {

[sgibson91]

Turns out I had declared the timezone incorrectly: https://jackstromberg.com/2017/01/list-of-time-zones-consumed-by-azure/