MetaTargetName: [...] invokes a nrg discover script
ConfFiles: [file or shell glob] specifies .conf files
HashBucketSize: [integer] specifies a hash-bucket subdirectory
subsequent metatargets
BucketMconfTargets: [yes|no] specifies that targets should should
or shouldn't have their own
subdirectory
Directory: [subdir] specifies a subdirectory for
subsequent metatargets
RunScript: [none|some nrg run script] specifies which run script does
data collection for subsequent
metatargets