The resource class is a NIM construct to identify the various
types of resources. Some of the resources currently implemented by the
Mt Xia NIM Servers are:
spot: Shared Product Object Tree
lpp_source: source device for optional product images
bosinst_data: config file used during BOS install
image_data: config file used during BOS install
mksysb: backup images of the rootvg
script: executable files that are executed on a client