fix NDFs in host status tests, close host testers
fix NDFs in host status tests, close host testers

NebulousLabs/Sia,NebulousLabs/Sia,mtlynch/Sia,MrStrong/Sia,MrStrong/Sia,ChrisSchinnerl/Sia,mharkus/Sia,mharkus/Sia,mtlynch/Sia,ericflo/Sia,ChrisSchinnerl/Sia,ericflo/Sia