Description of problem:
The HP moonshot is a cartridge-based host that has a single IPMI controller that manages all the cartridges. To turn individual cartridges on and off 

Version-Release number of selected component (if applicable):


How reproducible:
100% of moonshots, and presumably any other shared-ipmi-controller system.

Steps to Reproduce:
1. Get an HP Moonshot (which shares a single IPMI IP across all 20+ cartridges)
2. Create an instackenv.json with the MAC/IPMI IP of moonshot nodes
3. Run openstack baremetal configure boot
4. Add IPMI bridging information (see Additional Info for details) 
5. Run openstack baremetal introspection bulk start

Actual results:
Introspection halts because there is already an introspection process running on the moonshot's IPMI controller IP. 

To introspect the moonshot, you need to manually introspect each node individually, then set it to available manually as well. 

openstack baremetal introspection start <UUID>
ironic node-update <UUID> replace node_status=active

Expected results:
After import, we should be able to successfully run "openstack baremetal introspection bulk start" in parallel 

Additional info:
For each node, you need to add the IPMI bridging address and the cartridge address as below. CHAN is the cartridge hex address, and the target address is the node ID which, for one-node cartridges, is always 0x72: 
NODE=<UUID>
CHAN=0xaa
ironic node-update $NODE add 'driver_info/ipmi_bridging="dual"'
ironic node-update $NODE add "driver_info/ipmi_transit_address=${CHAN}"
ironic node-update $NODE add driver_info/ipmi_transit_channel=0
ironic node-update $NODE add driver_info/ipmi_target_address=0x72
ironic node-update $NODE add driver_info/ipmi_target_channel=7