TaskDefinition.Settings.Priority default value NOT Normal

[GF-Huang]

TaskScheduler/TaskService/Task.cs

Lines 3297 to 3298 in c126e0c

	[DefaultValue(typeof(ProcessPriorityClass), "Normal")]
	public ProcessPriorityClass Priority

[dahall]

This is tied to V1 and V2 compatibility and has changed in recent OS versions. I'd rather not change this since it has been in place for so long and could break existing code.