add check for same sp (#930)

* add check for same sp

cluster/azure/keyvault_flexvol_role/main.tf

@@ -2,8 +2,10 @@ data "azuread_service_principal" "flexvol" {
   application_id = "${var.service_principal_id}"
 }
 
+data "azurerm_client_config" "current" {}
+
 resource "azurerm_role_assignment" "flexvol" {
-  count = "${var.enable_flexvol? 1 : 0}"
+  count = var.enable_flexvol && var.service_principal_id != data.azurerm_client_config.current.client_id ? 1 : 0
 
   principal_id         = "${data.azuread_service_principal.flexvol.id}"
   role_definition_name = "${var.flexvol_role_assignment_role}"