Unclear restriction on pauseTimeBetweenBatches

[ritchxu]

Neither official MSDN documentation nor this doc in this repo points out the restriction on pauseTimeBetweenBatches

We are using .NET SDK and got following error when deploying:

Exception Message: The pause time PT2H provided is invalid. It must be formatted as an ISO 8601 non-negative time span of 10 minutes or less. For example a valid timespan is "PT0S" to represent 0 seconds. (type CloudException)
Exception Stack Trace:    at Microsoft.Azure.Management.Compute.VirtualMachineScaleSetsOperations.BeginCreateOrUpdateWithHttpMessagesAsync(String resourceGroupName, String vmScaleSetName, VirtualMachineScaleSet parameters, Dictionary`2 customHeaders, CancellationToken cancellationToken)