A shared_home resource represents a directory that can be
used as a common /home directory by one or more clients
When a shared_home resource is allocated to
a client, and when the dkls_init or dtls_init operation is performed,
NIM configures the client's configuration to use this common directory. After
initialization, anytime the client performs a network boot, the client NFS
mounts this common directory over its /home directory.
This common directory remains mounted as long as the client is running.
Note: Whenever this resource is deallocated, NIM changes
only the client's configuration, so the client no longer uses this directory.
NIM does not remove the common directory.