EMC PowerPath Server.
This pattern triggers on the presence of EMC PowerPath Server kernel
modules (Solaris, Linux, HP-UX and AIX)
Versioning is performed either using active approach (may require
elevated privileges, e.g. on Solaris) or via package query.
The pattern attempts to invoke the powermt utility to list the
'Pseudo name' and 'Logical Device ID' of the managed devices.
If this information is obtained it is added to the Software Instance
created in 2 attributes, stored as string and list (which aids in reporting).
NOTE: Obtaining this information requires elevated user privileges.