Check_MK Werk 4876: mounts: Fixed wrong handling of NFS mounts on Linux which are detected as stale

ID: 4876 Title: mounts: Fixed wrong handling of NFS mounts on Linux which are detected as stale Component: Checks & agents Level: 1 Class: Bug fix Version: 1.5.0i1 Such mounts are marked with '\040(deleted)' und therefore discovered as new services while the related services report {{UNKNOWN - filesystem not mounted}}. This has been fixed. The service now reports {{WARN - Mount point detected as stale}}. Please see https://utcc.utoronto.ca/~cks/space/blog/linux/NFSStaleUnmounting for more information.