Add SuspendTime in ThrottlePolicy to block request for additional seconds after rate limit exceeded

[adamriyadi]

Add SuspendTime in ThrottlePolicy to block request for additional seconds after rate limit exceeded

Usage :

public static void Register(HttpConfiguration config)
{
config.MessageHandlers.Add(new ThrottlingHandler()
{
Policy = new ThrottlePolicy(perSecond: 1, perMinute: 20, perHour: 200, perDay: 1500, perWeek: 3000)
{
IpThrottling = true,
SuspendTime = 300
},
Repository = new CacheRepository()
});
}