Make Health Check more lenient

[ezienecker]

The health check should be given a period in which to recover. When the endpoint is requested, it should be asked if the time period is set. If the time period is set, you should ask if the time of the request is outside the set time period, only if this is true the health check should return the status down. Note that if the health check is set to Up within the time period, this should be set accordingly.

[sflandergan]

I'll have a look at this one :)