Change time_to_burn_entire_budget operator to lte (#112)

A recent PR to nobl9-go (nobl9/nobl9-go#89) changed the required operator for time_to_burn_entire_budget to lte (from lt).
This PR reflects that change in the provider.

nobl9/resource_alert_policy.go

@@ -170,8 +170,10 @@ func marshalAlertConditions(d *schema.ResourceData) []n9api.AlertCondition {
 
 		measurement := condition["measurement"].(string)
 		op := "gte"
-		if measurement == "timeToBurnBudget" || measurement == "timeToBurnEntireBudget" {
+		if measurement == "timeToBurnBudget" {
 			op = "lt"
+		} else if measurement == "timeToBurnEntireBudget" {
+			op = "lte"
 		}
 
 		resultConditions[i] = n9api.AlertCondition{