discover_system_state: Accept a node parameter

In this commit, discover_system_state is extended to accept a
command line argument such that the user can specify a particular
host. This will allow discover_system_state to run for host1,
host2, or any other host!

Resolves openbmc/openbmc#1466

Change-Id: Ib58a4bc1fd5dfe10a6455778eac779eb0b2085e0
Signed-off-by: Michael Tritz <mtritz@us.ibm.com>
1 file changed